The Universal Gas Vent Cap is a convenient solution for a variety of rooftop vent, flue, and B-vent installations and helps prevent rain, debris, and most birds from entering the vent. Our universal gas vent cap has a self-centering, adjustable design for a quick, easy installation and manufactured with aluminum construction for rust and corrosion resistance. This includes a worm gear clamp with one-tool adjustability. Not to be used on solid fuel flues. UL 441 and CAN/ULC-605

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