DWFL – Double Wall Flanged Joint
Inner liner made of high-grade 444 stainless steel
Outer jacket made of 304 stainless steel
5” through 36” = 0.035” thick
5” through 24” = 0.025” thick
26” through 36” = 0.035” thick
Ceramic fiber insulation at:
1.25”, 2.25”, 3.25”, or 4.25” thick fiber
Inner connection is a 1.25” conical 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
All-stainless and fiber insulated chimney or vent for condensing and noncondensing appliances, engine and CHP exhaust piping, kitchen exhaust ducts, fireplace chimneys, dryer vents, fume venting, oven and process stacks, paint booth exhaust.
Applicable for all fuels: gas, oil, and solid fuels including wood.
|UL Listings (and ULC)|
UL-2561 Standard, 1400F Chimney Listing (ULC/ORD-C959 Industrial Type 760 C Chimney)
UL-103 Additional Type HT Listing (DWFL+ only)
UL-1978 Standard, Grease Duct (ULC-S662 Standard for Factory-Built Grease Ducts
UL-1738 Standard, Venting Systems for Gas-Burning Appliances, Categories II, III & IV (ULC-S636 Standard for Type BH Gas Venting Systems)
UL-441 Standard, Gas Vents (ULC-S605 Standard for Gas Vents)