Selkirk 3" to 8" Wall Thimble (Round - Type B Gas Vent) Size:6-Inch H 33 cm x W

H 33 cm x W 40

Lava Rock / Rolled Lava Stones / Ceramic River Rock

It can assist you avoid negative pressure within the house

Add 5-piece Charred/Driftwood Ceramic Log Set to your fireplace to complete this unit

4 Piece Ceramic Log Set

Selkirk 3" to 8" Wall Thimble (Round - Type B Gas Vent) Size:6-Inch H 33 cm x WSelkirk 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