DWFL-ZC Grease Duct

Extremely rigid made in all-stainless with limited lifetime warranty
Leak proof high-pressure joints
Cut length available for maximum field flexibility
Smooth flow and known resistance for perfected factory pressure calculations
Zero clearance and 2-hour fire rated so it eliminates the requirements for an additional fire rated shaft.

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.

Inner Material	Inner liner made of high-grade ASTM 316L stainless steel. 444 stainless steel
Outer Jacket Material	Outer jacket made of ASTM 304 stainless steel
Wall thickness	Inner 6” through 36” = 0.035” thick Outer 6” through 24” = 0.025” thick 26” through 36” = 0.035” thick
Inner diameter	6'' - 36'' I.D.
Insulation	3.25” thick compressed ceramic fiber insulation
Connection	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.
Locking band	Attached to each part

DWFL-ZC Grease Duct
UL Listings (and ULC) UL-2221 Standard, Fire Resistive Grease Duct Enclosure Assemblies 90” W.C. Pressure Listing for all Applications

DWFL-ZC Grease Duct

UL-2221 Standard, Fire Resistive Grease Duct Enclosure Assemblies

90” W.C. Pressure Listing for all Applications

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