DWFL-ZC Zero Clearance & Fire Rated Special Gas Vent
Inner liner made of high-grade ASTM 444 stainless steel.
Outer jacket made of ASTM 304 stainless steel
6” through 36” = 0.035” thick
6” through 24” = 0.025” thick
26” through 36” = 0.035” thick
6'' - 36'' I.D.
3.25” thick compressed ceramic fiber insulation
Inner connection is a 1.25” overlapping joint with added ½” rolled flange and vee band connection.
Supplied sealant is used in the vee band to make seal.
Blanket insulation and outer band completes the joint assembly.
Attached to each part
Eliminates the need for fire dampers in HVAC ducts and fume venting applications.
|UL Listings (and ULC)|
UL-1738 Standard, Venting Systems for Gas-Burning Appliances, Categories II, III & IV (ULC-S636 Standard for Type BH Gas Venting Systems)
UL-2221 Zero Clearance to combustibles and two-hour fire rated-resistive enclosure assembly
UL-1978 Standard, Grease Duct (ULC-S662 Standard for Factory-Built Grease Ducts)
UL-441 Standard, Gas Vents (ULC-S605 Standard for Gas Vents)
90” W.C. Pressure Listing for all Applications