The DuraTech 12 Class A Chimney Pipe Adjustable Roof Flashing for 0 12 - 6 12 Pitch Roof flashing is used to weather proof the penetration of chimney pipe through the roof.Storm Collar required Select roof flashing based on pitch of roof For example, a 6 12 pitch has a vertical rise of 6 over a horizontal distance of 12 Made of galvalume 6 - 8 Available with large baseADA Compliant: No Base Dimensions: 32 x 34 Collection: DuraTech Finish: Stainless Steel Fuel Type: Coal, Gas, Oil, Wood Height: 8 Inner Diameter: 12 Material: Dead Soft Aluminum Outer Diameter: 14-1 2 Pipe Class: Class A Pipe Shape: Round Style: Functional Weight: 7.5