THIMBL WAL BVNT4"4RV-WT

• 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

4 4RV-WT Wall ThimbleTV Non-Branded Items (Home Improvement)