Lambro 481Ul 4-In. Bath Fan Exhaust Through-The-Wall Vent Kit With Single Flap V

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Kit includes 4-in. white plastic single flap vent, 4 in. x 11 in. aluminum snap-lock tail pipe, 4-in. x 8 ft. flexible UL(R) 181 Class 1 air connector, 3-in. to 4-in. plastic increaser (optional use), and two 4-in. metal spring clamps;
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Recommended for bathroom fan venting;
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Not for use with clothes dryer venting;
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Opening/closing flap prevents outside elements from entering the vent;
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Foil flex duct has a maximum operating temperature of 250deg F;
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UV inhibitor is used to help prevent the premature fading of vent;