TYPE B GAS VENT WALL THIMBLE

This Type-B Wall Thimble is designed to safely and easily pass duct runs through walls. This Wall Thimble has the ability to withstand the rugged demands of continuous gas ventilation in residential and industrial applications.

This Thimble also comes equipped with an inner wall that is engineered to heat up rapidly, and remain hot during operation of the appliance which increases ventilation and appliance efficiency. 

This thimble features deep locking grooves for a quick and secure lock, a corrosion resistant galvanized body, aluminum inner wall, and is ideal for gas fireplaces, gas-fired furnaces, boilers, gas water heaters, and wall heater applications. It  is not compatible for coal or wood-burning applications.

• Use for through-the-wall system to provide clearances for vent from combustibles
• Adjusts from 3-1/2" to 6" to accommodate various wall thicknesses

FOR CALIFORNIA SHOPPERS

Hello Californians! Your government wants us to show you the following message:

• ⚠ WARNING: THIS PRODUCT CAN EXPOSE YOU TO CHEMICALS INCLUDING CHROMIUM WHICH ARE KNOWN TO THE STATE OF CALIFORNIA TO CAUSE CANCER AND BIRTH DEFECTS OR OTHER REPRODUCTIVE HARM.