Selkirk 3" to 8" Wall Thimble (Round - Type B Gas Vent) Size:8-Inch Maximum BTU Output: 25

Maximum BTU Output: 25

Model 3SPVADFM Piece/carton 6 Dimensions 3" (dia

No chimney or vent required

500 Watts of heating power to treat a space up to 15 square feet

Selkirk 3" to 8" Wall Thimble (Round - Type B Gas Vent) Size:8-Inch Maximum BTU Output: 25Selkirk 3" to 8" Wall Thimble 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. (RV) Round Type B Gas Vent Model RV Double Wall Gas Vent is the installer's choice for residential, industrial and light commercial applications. The aluminum liner heats up quickly to promote strong draft. Galvanized outer provides protection against outdoor elements. Product