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Metal-Fab provides complete and comprehensive venting solutions to the HVAC, Hearth and Plumbing markets. Founded in 1958 on the premise that offering better products and services would be the key to our success.
Metal-Fab continues to operate today as a privately held entity with the same core values that lead to success while creating steady, stable growth over the past six decades.
Customer needs are the highest priority at Metal-Fab that is why every customer receives a unique experience while choosing from a full line of high-quality venting products for commercial, residential and industrial applications.
Cutting-edge manufacturing systems, innovative designs, patent products, unmatched product quality, and a focus for detail have resulted in a leadership position within the industries Metal-Fab serves. Our constant product improvement process and experience in developing and engineer products for safe, efficient appliance operation sets Metal-Fab apart from the competition.
Corr/Guard® is tested and listed to UL 1738 for positive pressures up to 15" w.g., featuring a durable AL29-4C super ferritic stainless steel flue designed for extreme resistance to chloride ion pitting, crevice corrosion, stress corrosion cracking, and corrosion in moderately reducing environments. FCS Corr/Guard® incorporates an integral joint sleeve for easy joint alignment and aids in shingle condensate across the joint, preventing excessive joint corrosion and leakage. FCS products are manufactured with continuous laser-welded seams and casings, improving durability and reliability and increased efficiency.
Single and Double-Wall Positive Pressure Special Gas Vent engineered for venting today’s high-efficiency natural gas-burning or propane-fired appliances, categories II, III, and IV as defined by the Standard for Gas-Fired Central Furnaces, ANSI Z21.47 and NFPA 54.
When venting gas appliances always consult the appliance installation instructions. Horizontal runs, elbows, offsets, vertical height, may be limited by appliance performance specifications.
Horizontal runs must slope a minimum of ¼": 12" (6mm-305mm). Neutral or negative pressure systems must slope upward – away from the appliance. The positive pressure within the vent may slope upward or downward. Provide condensate drainage where required.
Vertical runs are directional-specific and must be properly supported. Supports are required above every offset to prevent vertical loading on elbows.
Corr/Guard products are designed for use on today’s highly efficient condensing appliances. UNS S44735 (i.e. AL29-4C), a Superferritic Stainless Steel was the first steel to successfully exceed the requirements of UL 1738, “Standard For Venting Systems For Gas-Burning Appliances, Categories II, III, and IV." It is considered the benchmark for condensing flue materials.
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Click to see Appliance Vent Categories
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| Max Operating Temperature: | 550º F (288 C) | |||||||||
| Max Operating Pressure: | 15" w.g. | |||||||||
| Clearance to Combustibles ENCLOSED – VERTICAL @550ºF (288 C) | 1" | |||||||||
| Clearance to Combustibles UNENCLOSED HORIZONTAL or VERTICAL @ 550º F (288 C) | 1" | |||||||||
| Joint Connection: | Sleeved – P077 Sealant Required | |||||||||
| Insulation: | Ceramic Insulation | |||||||||
| Inner Diameter: | 6" | |||||||||
| Outer Diameter: | 8" | |||||||||
| Height: | 18" | |||||||||
WARNING: Proposition 65
