Chimney pipe adapter, Adapts smoke pipe to class A chimney, Clearances are reduced to 6"" from combustibles, Double wall stove pipe lasts significantly longer, High quality, scratch resistant Black finish, Adjustable lengths means no cutting pipe to fit your installation, Listed, certified and labeled to UL safety standards, DSP, 6"", Length: 11, Width: 11, Height: 4, 25 SKU: JNSN51483