Selkirk 187703 Round Type B Gas Vent Wall Thimble, 3", #3RV- WT Clearance Pressure Vacuum Breakers (PVB's) prevent

Pressure Vacuum Breakers (PVB's) prevent the backflow of contaminated water into pressurized

Now even the heaviest packages can withstand rough handling

chalking and peeling paint

ClosetMaid multipurpose shelf installs anywhere you need extra storage

Selkirk 187703 Round Type B Gas Vent Wall Thimble, 3", #3RV- WT Clearance Pressure Vacuum Breakers (PVB's) preventThe RV line of Selkirk round vent pipe and fittings is designed for use on approved gas appliances in residential and light commercial and industrial applications. Round vents for large appliances will be found in the QC section which follows. Size 3" Part No. 3RV WT Measures: 3 58" x 7" Used to ensure clearance to combustibles is maintained Wall Thimble also serves as a firestop Adjusts from 4 1 8" to 7" to fit thickness of wall