- Description
4 4RV-WT Wall Thimble
Adjusts 4-1/8 to 7 to fit wall thickness
Round Type B gas vent
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
Adjusts 4-1/8 to 7 to fit wall thickness
Round Type B gas vent
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
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