Combustion Air Systems for DuraTech and DuraPlus HTC Applications: Triple-wall chimney system designed to provide air for combustion through its components. Provides a 3" air intake for the appliance. Materials and Construction .016" stainless steel inner wall. .018" galvalume middle wall. .018" galvalume outer, painted black. Clearances 6" clearance to walls. 8" clearance to ceiling on horizontal pipe that runs below the ceiling. Diameters 6" and 8" Listing ULC-S641 c-UL-us Combustion Air Systems for PelletVent Pro Applications: Multi-fuel system designed to provide air to the appliance for combustion. Provides a 3" air intake for the appliance. Materials and Construction Laser-welded, double-wall pipe with a .012" inner wall of 444 stainless steel and a .018" laser-welded galvalume outer wall. Primary metal-to-metal connection seals joint. Encapsulated o-ring provides a secondary seal. Clearances 1" clearance to any combustibles. Diameters 3" and 4" Listing c-UL-us (MH8381) |