3 Type B Gas Vent Wall Thimble - Stainless Steel Chimney Pipe Fitting for Water Heaters & Furnaces | Safe & Durable Flue Ventilation Solution for Home Heating Systems

3" Type B Gas Vent Wall Thimble - 3BVWT

This wall thimble is used for through-the-wall system to provide clearances for vent from combustibles. Adjusts from 3½" to 6" to accommodate various wall thicknesses.

WARNING: Carcinogens: This product can expose you to chemicals including Lead, which is [are] known to the State of California to cause cancer. For more information go to .