Designated for use on approved gas appliances, the 4 in. x 12 in. round type B adjustable gas vent pipe is ideal for residential, light commercial and industrial applications. The exclusive lock tab feature offers versatility to installation. Rugged construction, assured safety and fully tested and listed per UL 441.
Size refers to the inside diameter of the pipe or fitting
The outside diameter is approximately 1/2 inch larger
Outer material is 28 gal galvanized steel, inner liner is aluminum
Limited lifetime warranty
Fits most 4 inch pipes
In accordance with national fire protection association 54 and national fire protection association 211 standards
Inner liner is aluminum
Check appliance installation instructions for details
Industry best warranty contact Selkirk for details