DuraVent DuraTech LDC 18" x 12" Galvalume Double-Wall All-Fuel Chimney Pipe w52.63 the machinery and the people

the machinery and the people first and then the air by using all three methods of heat transfer: radiation

so the above limitation may not apply to you

Dependable cast iron firestarter

91 Type of Gas Natural Gas Ignition Multi Function Vent Type Direct Vent Venting 4 x 6 5/8 Installation Zero Clearance Orifice (Front / Rear) 44 / 40 Air Shutter Opening 3/16" Gas Inlet Shut-Off Valve (Pipe) 1/2" NPT Gas Supply Pressures (inches water column) Maximum 14 Minimum 4

This unit offers an impressive amount of customization to satisfy the requirements of your installation

DuraVent DuraTech LDC 18" x 12" Galvalume Double-Wall All-Fuel Chimney Pipe w52.63 the machinery and the peopleIntroducing DuraTech LDC All Fuel Double Wall Chimney System, available in 10 24 diameters. 10 to 16 diameters are UL 103 Type HT listed, ideal for factory built fireplaces, large masonry fireplaces, and other vented non condensing appliances. Solid pack design features 1 of ceramic insulation between a durable stainless inner and your choice of stainless or Galvalume outer jacket. Allows for 2 clearance to combustibles. DuraTech LDC is tested and