{"product_id":"duravent-round-type-b-gas-vent-model-bv-18-large-diameter-standard-tee","title":"DuraVent Round Type B Gas Vent Model BV 18\" Large Diameter Standard Tee","description":"\u003ciframe width=\"100%\" height=\"315\" allow=\"fullscreen;\" src=\"https:\/\/www.youtube.com\/embed\/HsiGYJ2y4KQ\"\u003e\u003c\/iframe\u003e\u003cp\u003eOur non-positional lock system on the Duravent® BV Gas Vent is the best lock system on the market today. The incorporation of the DuraTab® feature simply improves our lock system by adding flexibility and meeting market needs.\u003c\/p\u003e\n\u003cp\u003eThe BV line of Duravent round vent pipe and fittings is designed for use on approved gas appliances in residential and light commercial and industrial applications.\u003c\/p\u003e\n\u003ch1\u003eWhat's Included\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003e(1) Large Diameter Standard Tee\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eNot Included \u003cem\u003e(Sold Separately)\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eTee Cap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1\u003eFeatures\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003eUsed to transition system from horizontal to vertical orientation.\u003c\/li\u003e\n\u003cli\u003eProvides easy access for inspection and maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1\u003eSpecifications\u003c\/h1\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"50%\"\u003eItem Number\u003c\/td\u003e\n\u003ctd width=\"50%\"\u003e18BVT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"50%\"\u003eSeries\u003c\/td\u003e\n\u003ctd width=\"50%\"\u003eRound Type B Gas Vent Model BV (3\" - 30\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eStandard Tee\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInside Wall\u003c\/td\u003e\n\u003ctd\u003eAluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutside Wall\u003c\/td\u003e\n\u003ctd\u003eGalvanized Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize (Diameter)\u003c\/td\u003e\n\u003ctd\u003e18\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eA\u003c\/td\u003e\n\u003ctd\u003e28 1\/2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB\u003c\/td\u003e\n\u003ctd\u003e14 1\/4\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eTechnical Dimensions\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0813\/8725\/8148\/files\/Type_BV_Round_-_Standard_Tee_14-30_-_Spec.jpg?v=1765585941\" width=\"100%\"\u003e\u003c\/p\u003e\n\u003ch1\u003eWarranty\u003c\/h1\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 46.5779%;\"\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg style=\"float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0100\/7917\/4734\/files\/Lifetime_Warranty_Badge_240x240.jpg?v=1682130235\"\u003e\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 50.3802%;\"\u003eDuravent, Inc. (“Duravent”) provides this limited lifetime warranty for all of its products with the exception of Ventinox® (lifetime), and PolyPro® (ten years). Subject to the limitations set forth below, Duravent warrants that its products will be free from defects in material or manufacturing, if properly installed, maintained and used.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eDuraVent, Inc. (“DuraVent”) provides this limited lifetime warranty for all of its products with the exception of Ventinox® (lifetime), and PolyPro® (ten years). Subject to the limitations set forth below, DuraVent warrants that its products will be free from defects in material or manufacturing, if properly installed, maintained and used. DuraVent products are fully warranted if installed only by a professional installer. This Warranty is transferable from the original homeowner to the buyer of the home. This warranty does not cover normal wear and tear, smoke damage or damage caused by chimney fires, acts of God, or any product that was: (1) purchased other than from an authorized DuraVent dealer, retailer or distributor; (2) modified or altered; (3) improperly serviced, inspected or cleaned; or (4) subject to negligence or any use not in accordance with the installation instructions included with the product as determined by DuraVent.\u003c\/p\u003e\n\u003cp\u003eDuraVent provides the following warranties for its products: One Hundred Percent (100%) MSRP 15 years from the date of purchase, and Fifty Percent (50%) thereafter, except for the following limitations on: all Termination Caps and DuraBlack® are warranted at One Hundred Percent (100%) for five years. All warranty obligations of DuraVent shall be limited to repair or replacement of the defective product pursuant to the terms and conditions applicable to each product line. These remedies shall constitute DuraVent’s sole obligation and sole remedy under this warranty. This warranty provides no cash surrender value. The terms and conditions of this warranty may not be modified, altered or waived by any action, inaction or representation, whether oral or in writing, except upon the express, written authority of an executive officer of DuraVent.\u003c\/p\u003e\n\u003cp\u003eCorn, bio-fuels, driftwood or other wood containing salt, preservative-treated lumber, plastic and household trash or garbage, or wood pellets containing such materials must not be burned in the appliance or fireplace. In case of a chimney fire, the chimney must be inspected and approved by a certified Chimney Sweep before reuse. After each annual inspection, maintenance, and cleaning, the certified Chimney Sweep must fill out and date the appropriate section of the warranty card provided with the chimney liner.\u003c\/p\u003e\n\u003cp\u003eLIMITATIONS ON INTERNET SALES: Notwithstanding any other terms or conditions of this Limited Lifetime Warranty, DuraVent provides no warranty for the following specific products if such products are not installed by a qualified professional installer: DuraTech®, DuraTech® DTC, DuraTech® Premium, DuraPlus HTC®, DDW®, DuraChimney® II, PelletVent Pro®, DirectVent Pro®, FasNSeal®, FasNSeal® W2, FasNSeal® Flex, and PolyPro®, and DuraVent’s relining products including DuraLiner®, DuraFlex® (SW, Pro, 316, 304), and Ventinox®. For purposes of this warranty, a trained professional installer is defined as one of the following: licensed contractors with prior chimney installation experience, CSIA Certified Chimney Sweeps, NFI Certified Specialists, or WETT Certified Professionals.\u003c\/p\u003e\n\u003cp\u003eDuraVent must be notified and given the opportunity to inspect defective product prior to replacement under the terms of this limited lifetime warranty. All warranty claims must be submitted with proof of purchase. Labor and installation costs are not covered under this warranty. To obtain warranty service contact: DuraVent Warranty Service, 877 Cotting Ct., Vacaville CA 95688, or call 800-835-4429.\u003c\/p\u003e\n\u003cp\u003eWHERE LAWFUL, DURAVENT DISCLAIMS ALL OTHER WARRANTIES, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL DURAVENT BE LIABLE FOR INCIDENTAL, CONSEQUENTIAL, PUNITIVE OR SPECIAL DAMAGES OR DIRECT OR INDIRECT LOSS OF ANY KIND, INCLUDING BUT NOT LIMITED TO PROPERTY DAMAGE AND PERSONAL INJURY. DURAVENT’S ENTIRE LIABILITY IS LIMITED TO THE PURCHASE PRICE OF THIS PRODUCT. SOME STATES DO NOT ALLOW LIMITATIONS ON IMPLIED WARRANTIES, OR THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATIONS AND EXCLUSIONS MAY NOT APPLY TO YOU. THIS LIMITED WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS THAT VARY FROM STATE TO STATE.\u003c\/p\u003e\u003ch1\u003eDocuments \u0026amp; Files\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0813\/8725\/8148\/files\/Duravent_Model_BV_Type_B_Catalog.pdf?v=1765512000\" target=\"_blank\"\u003eType B Gas Vent Product Catalog\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0813\/8725\/8148\/files\/464002189_REV06__Model_BV_Instructions_en10042024.pdf?v=1765512130\" target=\"_blank\"\u003eType B Gas Vent (Model BV) - Round and Oval - Installation Instructions\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0813\/8725\/8148\/files\/3016612_UGVC_en05082024.pdf?v=1765512134\" target=\"_blank\" rel=\"noopener\"\u003eUniversal Vent Cap Installation Instructions\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0813\/8725\/8148\/files\/BV_DuraVent_Specification-Chart_4.6.22_85cbae67-dafe-4176-9224-032a37c42a4c.pdf?v=1765512214\" target=\"_blank\" rel=\"noopener\"\u003eType B Gas Vent (Model BV) Specification Sheet\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0813\/8725\/8148\/files\/Bulletin_Adapting-GV-to-BV-and-BV-to-GV_06-2022_c53ee9f9-85ac-441d-864e-277f6890460a.pdf?v=1765512269\" target=\"_blank\" rel=\"noopener\"\u003eType B Gas Vent - Adapting Model GV Lengths to Model BV \u0026amp; BV to GV Bulletin\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0813\/8725\/8148\/files\/Bulletin_GV-to-BV_06-2022_687a26b6-0edd-4501-ae04-9604b9f9dce2.pdf?v=1765512268\" target=\"_blank\" rel=\"noopener\"\u003eType B Gas Vent - Connecting Model GV Rain Caps to Model BV Pipe Bulletin\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0813\/8725\/8148\/files\/DVG_UVC_BT-001-E_06-24.pdf?v=1765512269\" target=\"_blank\" rel=\"noopener\"\u003eUniversal Vent Cap Product Bulletin\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0813\/8725\/8148\/files\/DuraVent_BV_Expandable_Flex_Connector_MBEFCF-W_SS_4-22.pdf?v=1697336596\" target=\"_blank\" rel=\"noopener\"\u003eDuraConnect I Expandable Flex Connector Sheet\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0813\/8725\/8148\/files\/Duravent-DCII_Brochure_06-2022_V1.pdf?v=1697336619\" target=\"_blank\" rel=\"noopener\"\u003eDuraConnect II Double Wall Flex Connector Sheet\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0813\/8725\/8148\/files\/DV_BVCaps_SS-001-E_09-24.pdf?v=1765512797\" target=\"_blank\" rel=\"noopener\"\u003eLocking Clip Vent Caps Sheet\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0813\/8725\/8148\/files\/DV_UHK_SS-001E_02-25.pdf?v=1765513199\" target=\"_blank\" rel=\"noopener\"\u003eType B Gas Vent Model BV Unit Heater Kit Sheet\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0813\/8725\/8148\/files\/DV_BV_SS-001E_3-25.pdf?v=1765513292\" target=\"_blank\" rel=\"noopener\"\u003eRedesigned Faster Connection Method\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0813\/8725\/8148\/files\/DVG-HVAC_UVC_SS-001E_12-24.pdf?v=1765513338\" target=\"_blank\" rel=\"noopener\"\u003eUniversal Vent Cap Sales Sheet\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch1\u003eVideos\u003c\/h1\u003e\n\u003cp\u003e\u003ciframe width=\"100%\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/muQ7CcsAe74\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"100%\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/xXZHq4oOCm0\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"100%\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/Sh96gAxHpmk\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\u003ch1\u003eFrequently Asked Questions\u003c\/h1\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eWhat is DuraVent Type B Gas Vent (Model BV)?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0100\/7917\/4734\/files\/ModelBV_TileImage_.jpg_webp_b5a37b9eefbbeeeb7861f0be054fed25.jpg?v=1765508666\" alt=\"\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDuravent’s Type B Gas Vent system. Use with natural gas or liquid propane Category I and draft hood equipped appliances, and appliances tested and listed to use Type B Gas Vent. Applications include: natural gas fireplaces, gas-fired furnaces, boilers, water heaters, and wall or space heating applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMaterials and Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRound Type B Gas Vent 3″ – 8″ and Oval 4″ – 6″: Aluminum .012″ inner wall, galvanized .018″ outer wall, in Canada, the lengths have a galvalume .018″ outer wall. The 3″ – 8″ Round gas vent features DuraLock® and DuraTab® . The Oval gas vent features the button lock.\u003c\/p\u003e\n\u003cp\u003eRound Type B Gas Vent 10″ – 18″: Aluminum .014″ inner wall, galvanized .018″ outer wall. DuraLock® feature for 10″ and larger diameters.\u003c\/p\u003e\n\u003cp\u003eRound Type B Gas Vent 20″ – 30″: aluminum .023″ inner wall, galvanized .018″ outer wall. DuraLock® feature for 10″ and larger diameters.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eClearances\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eClearances to combustible materials in single and multi-family dwellings:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1″ Clearance – USA – 3″ to 30″\u003c\/li\u003e\n\u003cli\u003e1″ Clearance – Canada – 3″ to 24″\u003c\/li\u003e\n\u003cli\u003e2″ Clearance – Canada – 26″ to 30″\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAnnular insulating air space\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e3″ – 8″ Round Vent: 1\/4″ air space\u003c\/li\u003e\n\u003cli\u003e4″ – 6″ Oval Vent: 1\/4″ air space\u003c\/li\u003e\n\u003cli\u003e10″ – 30″ Round Vent: 1\/2″ air space \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDiameters\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e3″- 30″ Round Diameter.\u003c\/li\u003e\n\u003cli\u003e4″, 5″ and 6″ Oval (USA only)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eListings\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e UL Listed to UL 441 and CAN\/ULC-S605 (MH2848 and MH17667).\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable width=\"100%\" style=\"height: 18.8833px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 18.8833px;\"\u003e\n\u003ctd style=\"height: 18.8833px;\"\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eWhat is DuraVent Type B Gas Vent (Model BV)'s Typical Installation?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003e\u003cstrong\u003eSmall Diameter – Vertical Installations\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg style=\"display: block; margin-left: auto; margin-right: auto;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0100\/7917\/4734\/files\/SmallDiameterVent2.0-scaled.jpg?v=1765508846\"\u003e\u003c\/p\u003e\n\u003ctable style=\"width: 100.094%;\" width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 14.5043%; text-align: center;\"\u003e\u003cstrong\u003eItem\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 16.4127%; text-align: center;\"\u003e\u003cstrong\u003eClearance - See Note 1\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 11.0387%; text-align: center;\"\u003e\u003cstrong\u003eMax Height\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 15.4888%; text-align: center;\"\u003e\u003cstrong\u003eOuter Tube Ø\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 17.5578%; text-align: center;\"\u003e\u003cstrong\u003eMaterials\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 12.2141%; text-align: center;\"\u003e\u003cstrong\u003eLocking Device\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 10.4965%; text-align: center;\"\u003e\u003cstrong\u003eUL Listing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 14.5043%;\"\u003eType B Vent Round 3″-8″ (USA)\u003c\/td\u003e\n\u003ctd style=\"width: 16.4127%;\"\u003e1 inch\u003c\/td\u003e\n\u003ctd style=\"width: 11.0387%;\"\u003e100 feet\u003c\/td\u003e\n\u003ctd style=\"width: 15.4888%;\"\u003e1\/2″ larger than ID\u003c\/td\u003e\n\u003ctd style=\"width: 17.5578%;\"\u003eInner – .012″ Aluminum Outer – .018″ Galvanized \u003c\/td\u003e\n\u003ctd style=\"width: 12.2141%;\"\u003eDuraLock \u0026amp; DuraTab\u003c\/td\u003e\n\u003ctd style=\"width: 10.4965%;\"\u003eMH2848\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 14.5043%;\"\u003eType B Vent Round 3″-8″ (CAN)\u003c\/td\u003e\n\u003ctd style=\"width: 16.4127%;\"\u003e1 inch\u003c\/td\u003e\n\u003ctd style=\"width: 11.0387%;\"\u003e100 feet\u003c\/td\u003e\n\u003ctd style=\"width: 15.4888%;\"\u003e1\/2″ larger than ID\u003c\/td\u003e\n\u003ctd style=\"width: 17.5578%;\"\u003eInner – .012″ Aluminum Outer – .018″ Galvalume*\u003c\/td\u003e\n\u003ctd style=\"width: 12.2141%;\"\u003eDuraLock \u0026amp; DuraTab\u003c\/td\u003e\n\u003ctd style=\"width: 10.4965%;\"\u003eMH2848\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 14.5043%;\"\u003eRound 10\" to 18\" - See note 2\u003c\/td\u003e\n\u003ctd style=\"width: 16.4127%;\"\u003e1 inch\u003c\/td\u003e\n\u003ctd style=\"width: 11.0387%;\"\u003e100 feet\u003c\/td\u003e\n\u003ctd style=\"width: 15.4888%;\"\u003e1″ larger than ID\u003c\/td\u003e\n\u003ctd style=\"width: 17.5578%;\"\u003eInner – .014″ Aluminum Outer – .018″ Galvanized\u003c\/td\u003e\n\u003ctd style=\"width: 12.2141%;\"\u003eDuraLock\u003c\/td\u003e\n\u003ctd style=\"width: 10.4965%;\"\u003eMH2848\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 14.5043%;\"\u003eRound 20″ to 30″ (USA) See note 2\u003c\/td\u003e\n\u003ctd style=\"width: 16.4127%;\"\u003e1 inch\u003c\/td\u003e\n\u003ctd style=\"width: 11.0387%;\"\u003e100 feet\u003c\/td\u003e\n\u003ctd style=\"width: 15.4888%;\"\u003e1″ larger than ID\u003c\/td\u003e\n\u003ctd style=\"width: 17.5578%;\"\u003eInner – .023″ Aluminum Outer – .018″ Galvanized\u003c\/td\u003e\n\u003ctd style=\"width: 12.2141%;\"\u003eDuraLock\u003c\/td\u003e\n\u003ctd style=\"width: 10.4965%;\"\u003eMH2848\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 14.5043%;\"\u003eRound 20″ to 24″ (CAN) See note 2\u003c\/td\u003e\n\u003ctd style=\"width: 16.4127%;\"\u003e1 inch\u003c\/td\u003e\n\u003ctd style=\"width: 11.0387%;\"\u003e100 feet\u003c\/td\u003e\n\u003ctd style=\"width: 15.4888%;\"\u003e1″ larger than ID\u003c\/td\u003e\n\u003ctd style=\"width: 17.5578%;\"\u003eInner – .023″ Aluminum Outer – .018″ Galvanized\u003c\/td\u003e\n\u003ctd style=\"width: 12.2141%;\"\u003eDuraLock\u003c\/td\u003e\n\u003ctd style=\"width: 10.4965%;\"\u003eMH2848\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 14.5043%;\"\u003eRound 26″ to 30″ (CAN) See note 2\u003c\/td\u003e\n\u003ctd style=\"width: 16.4127%;\"\u003e2 inch\u003c\/td\u003e\n\u003ctd style=\"width: 11.0387%;\"\u003e100 feet\u003c\/td\u003e\n\u003ctd style=\"width: 15.4888%;\"\u003e1″ larger than ID\u003c\/td\u003e\n\u003ctd style=\"width: 17.5578%;\"\u003eInner – .023″ Aluminum Outer – .018″ Galvanized\u003c\/td\u003e\n\u003ctd style=\"width: 12.2141%;\"\u003eDuraLock\u003c\/td\u003e\n\u003ctd style=\"width: 10.4965%;\"\u003eMH2848\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 14.5043%;\"\u003eOval Type B Gas Vent 4″ and 5″\u003c\/td\u003e\n\u003ctd style=\"width: 16.4127%;\"\u003e1 inch - See Note 5\u003c\/td\u003e\n\u003ctd style=\"width: 11.0387%;\"\u003eSee Note 3\u003c\/td\u003e\n\u003ctd style=\"width: 15.4888%;\"\u003e4\": 2 1\/2″ x 7 1\/4″ or 5\": 3 1\/8″ x 10 7\/8″\u003c\/td\u003e\n\u003ctd style=\"width: 17.5578%;\"\u003eInner – .012″ Aluminum Outer – .018″ Galvanized\u003c\/td\u003e\n\u003ctd style=\"width: 12.2141%;\"\u003eDuraLock\u003c\/td\u003e\n\u003ctd style=\"width: 10.4965%;\"\u003eMH2848\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 14.5043%;\"\u003eOval Type B Vent 6″\u003c\/td\u003e\n\u003ctd style=\"width: 16.4127%;\"\u003e1 inch - See Note 5\u003c\/td\u003e\n\u003ctd style=\"width: 11.0387%;\"\u003eSee Note 3\u003c\/td\u003e\n\u003ctd style=\"width: 15.4888%;\"\u003e3 1\/4″ x 12″\u003c\/td\u003e\n\u003ctd style=\"width: 17.5578%;\"\u003eInner – .012″ Aluminum Outer – .018″ Galvanized\u003c\/td\u003e\n\u003ctd style=\"width: 12.2141%;\"\u003eDuraLock\u003c\/td\u003e\n\u003ctd style=\"width: 10.4965%;\"\u003eMH2848\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 14.5043%;\"\u003eDuraConnect I Flex 3″ and 4″\u003c\/td\u003e\n\u003ctd style=\"width: 16.4127%;\"\u003e1 inch\u003c\/td\u003e\n\u003ctd style=\"width: 11.0387%;\"\u003eSee Note 4\u003c\/td\u003e\n\u003ctd style=\"width: 15.4888%;\"\u003eNA\u003c\/td\u003e\n\u003ctd style=\"width: 17.5578%;\"\u003e.012″ Aluminum Flexible .018″ Galvalume Fittings\u003c\/td\u003e\n\u003ctd style=\"width: 12.2141%;\"\u003eDuraLock \u0026amp; DuraTab\u003c\/td\u003e\n\u003ctd style=\"width: 10.4965%;\"\u003eMH17667\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 14.5043%;\"\u003eDuraConnect II Flex 3″ to 5″\u003c\/td\u003e\n\u003ctd style=\"width: 16.4127%;\"\u003e1 inch\u003c\/td\u003e\n\u003ctd style=\"width: 11.0387%;\"\u003eSee Note 4\u003c\/td\u003e\n\u003ctd style=\"width: 15.4888%;\"\u003e1\/4″ larger than ID\u003c\/td\u003e\n\u003ctd style=\"width: 17.5578%;\"\u003e.006″ 2 Ply Aluminum Flex .018″ Galvalume Fittings\u003c\/td\u003e\n\u003ctd style=\"width: 12.2141%;\"\u003eDuraLock \u0026amp; DuraTab\u003c\/td\u003e\n\u003ctd style=\"width: 10.4965%;\"\u003eMH17667\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003e*In Canada, the outer tube material is galvalume for 3″ to 8″ pipe length. All other 3″ to 8″ fittings have a galvanized outer tube.\u003c\/em\u003e\u003c\/p\u003e\n\u003csection data-id=\"069120f\" data-element_type=\"section\"\u003e\n\u003cp\u003e\u003cstrong\u003eNotes: \u003c\/strong\u003e\u003cstrong\u003eGas Vent Specification Chart\u003c\/strong\u003e\u003c\/p\u003e\n\u003col type=\"1\"\u003e\n\u003cli\u003eClearance to combustibles is the air space between vent and combustibles.\u003c\/li\u003e\n\u003cli\u003eFor maximum height refer to the appliance manufacturer installation instructions and the National Fuel Gas Code NFPA 54 or the Canadian Fuel Gas Installation Code CSA-149.1-00. For taller applications refer to Duravent Sizing Handbook.\u003c\/li\u003e\n\u003cli\u003eWhen oval is used on wall furnaces, minimum height required from bottom of furnace to cap is 12′, minimum 16″ stud space.\u003c\/li\u003e\n\u003cli\u003eLimited by sizing tables.\u003c\/li\u003e\n\u003cli\u003eBVO 4″ \u0026amp; 5″ oval can be installed in a 2″ x 4″or a 2″ x 6″ stud wall. BVO 6″ oval can be installed in a 2″ x 6″ stud wall.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/section\u003e\n\u003c\/details\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 16.3333px;\"\u003e\n\u003ctd style=\"height: 16.3333px;\"\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eWhat are the DuraVent product lines?\u003cbr\u003e\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003e\u003cstrong\u003eDuraVent offers the following product lines:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDuraTech 5″-8″: All-fuel, double-wall chimney system. UL 103 HT and ULC S604.\u003cbr\u003e\u003cbr\u003eDuraTech LDC 10″-24″: All-fuel, double-wall chimney system. UL 103.\u003cbr\u003e\u003cbr\u003eDuraTech Canada is a double-wall, all-fuel chimney system for use with wood stoves, wood fireplaces, and other appliances using wood, oil, gas, or coal.\u003cbr\u003e\u003cbr\u003eDuraPlus: Triple-wall all-fuel chimney with two layers of insulation.\u003cbr\u003e\u003cbr\u003eDuraPlus HTC: Double-wall all-fuel chimney built to Canadian standards.\u003cbr\u003e\u003cbr\u003eDuraChimney II: Double-wall air-cooled chimney for pre-fabricated masonry chimneys.\u003cbr\u003e\u003cbr\u003eCombustion Air Systems: DuraVent’s exclusive, patent-pending system is designed to bring in outside combustion air directly to your wood or pellet stoves.\u003cbr\u003e\u003cbr\u003eDuraBlack: Single-wall stovepipe.\u003cbr\u003e\u003cbr\u003eDVL: Double-wall stovepipe.\u003cbr\u003e\u003cbr\u003eDuraLiner: Double-wall factory insulated masonry relining system.\u003cbr\u003e\u003cbr\u003eDuraFlex: Flexible stainless steel liners.\u003cbr\u003e\u003cbr\u003eDuraFlex Aluminum: Flexible aluminum relining for masonry chimney. UL 1777 and ULC S635.\u003cbr\u003e\u003cbr\u003eVentinox: Flexible stainless steel liner.\u003cbr\u003e\u003cbr\u003eCVS: Provides Ortal Branded Fireplace Systems and as a Direct Vent for Pellet Stoves.\u003cbr\u003e\u003cbr\u003ePelletVent: Multi-fuel vent.\u003cbr\u003e\u003cbr\u003ePelletVent Pro: Vents appliances using oil, wood pellets, corn, and other biofuels.\u003cbr\u003e\u003cbr\u003eDirectVent Pro: Unitized, co-axial venting system for direct vent gas or propane stoves, heaters, and fireplaces.\u003cbr\u003e\u003cbr\u003eType B Gas Vent: Vents natural gas, liquid propane category I, and draft-hood equipped appliances\u003cbr\u003e\u003cbr\u003eFasNSeal: Single, double-wall, flex, and concentric venting for category II, III, and IV appliances.\u003cbr\u003e\u003cbr\u003eFasNSeal 80\/90: Combined Category I and IV venting for Gas-Burning Appliances.\u003cbr\u003e\u003cbr\u003ePolyPro: Single-wall, flex, and concentric venting made of polypropylene for category II and IV condensing appliances that operate up to 248 degrees.\u003cbr\u003e\u003cbr\u003ePolyPro Flex: PolyPro double-wall flex lining system. Environmentally safe venting system for high-efficiency appliances, including water heaters, condensing boilers, and warm air furnaces. ULC S636.\u003cbr\u003e\u003cbr\u003eDuraSeal: Single-Wall and Double-Wall Special Gas Vent Boiler Adapters.\u003cbr\u003e\u003cbr\u003eDuraStack: A modular double-wall, positive pressure chimney for use with boiler breeching and stack, engine exhaust, and grease duct (DIS only)\u003cbr\u003e\u003cbr\u003eDuraStack Pro: Models DIS and DAS. Modular Double-Wall Positive Pressure Chimney for Boiler Breeching, Stack, and Engine Exhaust.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"DuraVent","offers":[{"title":"Default Title","offer_id":45147861811370,"sku":"18BVT","price":1864.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0100\/7917\/4734\/files\/DuraVent-Round-Type-B-Gas-Vent-Model-BV-18-Large-Diameter-Standard-Tee.jpg?v=1746052349","url":"https:\/\/usfireplacestore.com\/products\/duravent-round-type-b-gas-vent-model-bv-18-large-diameter-standard-tee","provider":"US Fireplace Store","version":"1.0","type":"link"}