Dampers

21.5" Barometric Damper automatically opens when cooler is on and closes off the duct when cooler is turned off. High grade aluminum frame and vanes with nylon hinges and weatherstripping insulation for thermal seal. Fits 22" sidedraft duct.

21.5" Barometric Damper automatically opens when cooler is on and closes off the duct when cooler is turned off. High grade aluminum frame and vanes with nylon hinges and weatherstripping insulation for thermal seal. Fits 22" cooler roof jack.

19.75" Barometric Damper automatically opens when cooler is on and closes off the duct when cooler is turned off. High grade aluminum frame and vanes with nylon hinges and weatherstripping insulation for thermal seal. Fits 20" sidedraft duct.

19.75" Barometric Damper automatically opens when cooler is on and closes off the duct when cooler is turned off. High grade aluminum frame and vanes with nylon hinges and weatherstripping insulation for thermal seal. Fits 20" cooler roof jack.

17.75" Barometric Damper automatically opens when cooler is on and closes off the duct when cooler is turned off. High grade aluminum frame and vanes with nylon hinges and weatherstripping insulation for thermal seal. Fits 18" sidedraft duct.

17.75" Barometric Damper automatically opens when cooler is on and closes off the duct when cooler is turned off. High grade aluminum frame and vanes with nylon hinges and weatherstripping insulation for thermal seal. Fits 18" cooler roof jack for 4500...

Diffuses air 6 ways with 14 adjustable louvers, made with white colored, high impact plastic. Will not rust, corrode or stain. For duct openings up to 20" x 20". Grille is 22" x 22" x 3-1/8" depth. Easy to install. For all residential cooler models.

Quantity (3) Replacement thermal damper for UP-DUX evaporative cooler attic vent. White plastic insert.

Replacement grille for UP-DUX evaporative cooler vent. White plastic with slot for thermal damper.

DL-101. UP-DUX Exhausts evaporative cooler air into attic. Eliminates excessive attic heat and the need to open windows and doors to vent air from cooler. UP-DUX vents should be installed in the ceiling of each major room to allow the cool air to escape...