What is a type B gas vent?

Type B Gas Vent is designed for negative pressure applications and flue gas temperatures not exceeding 400°F above ambient for Category I appliances. Durability is the result of high-quality materials and workmanship, with galvanized outer pipe and aluminum inner pipe providing protection against corrosion and external damage.

Are there installation instructions for the Hart&Cooley® b-vent?

A full set of installation instructions are supplied with all caps and supports. HART & COOLEY® B-VENT complies with the latest Underwriters Laboratories Standard No. 441 and Bears the Mark. 3” to 12” inner and outer pipe curled together as an integral unit.

What is the size of a B-vent pipe?

HART & COOLEY® B-VENT complies with the latest Underwriters Laboratories Standard No. 441 and Bears the Mark. 3” to 12” inner and outer pipe curled together as an integral unit.