Skip to product information
1 of 1

SKU:AF4-FS

Selkirk 3" to 8" Flexi-Sleeve (Flexi-Liner)

Selkirk 3" to 8" Flexi-Sleeve (Flexi-Liner)

Regular price $74.13
Regular price Sale price $74.13
Sale Sold out
Size
  • Free Shipping on Orders Over $300
  • Same-Day Order Processing
  • Easy Monthly Installments Starting at 0% APR*
Got a question?
• Text or call 888-992-1556
• Email support@usfireplacestore.com
• Start a live chat

Our team is available to serve you 8:00 AM - 11:59 PM ET, 7 days a week.
Selkirk 3" to 8" Flexi-Sleeve

Insulation sleeve with tough poly exterior.

Cable Ties included.


Aluminum Flexible Liner

Flexi-Liner system is designed for relining existing masonry or listed factory-built chimneys and vents serving Category I for natural gas or propane fired appliances.

3" to 8" Diameters:

  • 3000 series aluminum, 2 ply
  • Maximum flue gas temperature 470°F
  • 3" - 8" diameter kits available in 25' and 35' lengths
  • 3" - 5" diameter kits available in 15' lengths
  • Extension kits available in 10', 25' and 35' lengths
  • Can be installed on neutral and negative draft gas appliances
  • B-Vent adaptor available to transition from all brands of Type-B gas vent
  • Insulation sleeve promotes quick heat up, enhances draft and allows zero clearance between liner and masonry chimney 
  • Smart Choice warranty on all components

Approvals:

  • Listed to UL 1777 (Flexible Aluminum Liner installed with Insulation Sleeve) in the U.S.A

Product Code
Part No Size
1740120 AF4-FS 3-Inch to 4-Inch
1750120 AF5-FS 5-Inch
1760120 AF6-FS 5.5-Inch to 6-Inch
1770120 AF7-FS 7-Inch
1780120 AF8-FS 8-Inch

CA Residents: 
See Prop 65 WARNING.


Warranty

Lifetime Limited Warranty

Refer to the Smart Choice Warranty for full warranty details.
 

    View full details

    • Researched and ordered my fireplace from US FIreplace Store. Pricing was a fair value however, the customer service was EXCELLENT! I had an issue with the direct vent venting. I called US Fireplace and the correct items were sent out the next day AND Janessa stayed on top of my return authorization and sent me the permissions and documents I needed to return the incorrect item and no cost to me, including return shipping. Overall, I am a very satisfied customer and my fireplace looks and operates flawlessly. I am glad that I selected US FIreplace to source my direct vent fireplace. Thank you for the great service.

      Clay

      Monteagle, TN

    • I had placed an order, through Lowe's Home Improvement, for an Electric Firebox: Revillusion RBF42. Ordered 1st part of January. Was told I would have it in 3 weeks. When checking to see is it came in, was told it was delayed to 3/15. Was then told is was delayed until 4/25. Waited until 4/27 to check on it. Was then told it was now delayed until August. This firebox was going in a new Sun Room addition. I could not get my final inspection until the Firebox was installed. I went on line and googled for this same product. US Fireplace Store web site was given to me. This was on a Saturday. I call and reached a very nice man. Explain what I was look for. He checked and told me they had 30 of them in stock. I almost fell out of my chair. I clarified with him the product I was wanting. I ask how soon could I get it. He told me it would ship today. Again, was amazed. It arrived on the following Monday. What a pleasure and a relief working with US Fireplace Store and their employees. Exceed my expectations.

      Thomas W.

      Fort Mill, SC

    • Great prices, quick delivery and fast hassle free services on the issue I encountered. I had purchased an electric fireplace unit that would not fit into the existing fireplace space. With one email I was able to get the wrong fireplace refunded and picked up at my home at no extra cost and the new one I purchased and delivered free of charge. Great company.

      John P.

      Denvers, MA

    1 of 12
    • 100,000+ Products

      America's largest selection of hearth & heating products. Fireplaces, stoves, fire pits, heaters, log sets and more.

    • Easy Returns

      Need to return the merchandise? We accept returns for 30 days from the date of delivery.

    • Live Chat Support

      No chatbots. Speak with a human. Average response time is 48 seconds.

    • 7 Days/Week Service

      We're here to help on live chat, email & phone. 8:00 AM - 11:59 PM Eastern Time.

    • Pay Over Time

      0% APR is available for 3 and 12- month financing.* See if you prequalify today.

    • Staff Picks

      Check out the Staff Picks collection. See the top products selected by our team.