SELKIRK CORP 187703 3-Inch Wall Thimble, Silver
$23.99
- 3″, 3RV-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
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