Selkirk Metalbestos Selkirk 104800 Gas Vent, 4" Cap Bird Proof Type B Top Round,

Gas Vent Type B, 4 In cap

Brick-Red Color | Nonflammable | Provides A Fireproof Acoustic Seal

This is manufactured in Mexico

Top round

For gravity draft venting of LP or natural gas burning appliances

Not for wall furnaces or wood burning applications

Inner wall aluminum, outer wall galvanized