641-S&P model 641 wall cap. Aluminum natural finish. Built in backdraft damper and birdscreen. For 6″ round duct.

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641-S&P model 641 wall cap. Aluminum natural finish. Built in backdraft damper and birdscreen. For 6″ round duct.

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S&P model 641 wall cap. Aluminum natural finish. Built in backdraft damper and birdscreen. For 6″ round duct.

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