DWFL-Zero UL-2221 Zero Clearance & Fire Rated Grease Duct
Inner liner made of high-grade ASTM 316L stainless steel.
Outer jacket made of ASTM 304 stainless steel
5” through 36” = 0.035” thick
5” through 24” = 0.025” thick
26” through 36” = 0.035” thick
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
Stainless steel and factory insulated zero clearance and fire rated duct assembly for Kitchen Ventilation Systems and Special Gas Vent.
Eliminates the need for fire dampers in HVAC ducts, laundry, and fume venting applications.
|UL Listings (and ULC)|
UL-2221 Standard, Fire Resistive Grease Duct Enclosure Assemblies