Features fully unitized twist-lock construction in 3″ and 4″ diameters. Listed at 1″ clearance to combustibles in USA and Canada. It can be used in both vertical and horizontal installations. Laser-welded inner wall in stainless steel, combined with laser-welded outer wall in galvalume. Pipe outside diameter is plus 5/8″. Exterior finish in galvalume or painted black. 12″ length available with stainless steel (SS) exterior. To calculate the installed length, subtract 1 1/2″ from each pipe length.
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