This 3 in. adjustable type B wall thimble boasts a long list of convenience features, including a durable galvanized-steel outer pipe, die-formed ends and convenient lock tabs. This wall thimble is designed for use on approved gas appliances in residential, light-commercial and industrial applications.
Wall thimble adjusts from 4-1/8 Inch to 7 Inch to fit the thickness of the wall
When installed according to manufacturer specifications, the wall thimble provides the required 1 inch air space to combustibles
Tested and listed per UL-441 for installation as type "B" and B-W gas vents to be installed in single and multi-story buildings
Limited lifetime warranty
Designed for use on approved gas appliances in residential, light-commercial and industrial applications
Tested and listed per UL 441 for installation in single- and multi-story buildings in accordance with national fire protection association standards nape 54 and nape 211
Inner liner is aluminum
Check appliance installation instructions for details
Industry best warranty contact Selkirk for details