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4" vertical backdraft damper, laundry ,kitchen exhaust


4" BUTTERFLY INLINE BACKDRAFT DAMPER
WITH REVERSED BEAD FOR SEALING.
THE REVERSED BEAD ALSO PREVENTS
THE DAMPERS FROM OPENING INWARD
WITCH PREVENTS UNWANTED ANIMALS,
INSECTS AND RODENTS FROM ENTERING
CHECK MY OTHER LISTINGS FOR HORIZONTAL APPLICATIONS
IF YOU NEED ONE ASAP PLEASE E-MAIL ME



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