Dimensions: PIPE SIZE: 7 INCH DIAMETER
The 7 and 8 inch dampers shown below are mounted facing upward because gravity closes them and air pressure from the hood opens them. 7 INCH DAMPER RANGE HOOD FILTER, INC EXCLUSIVE DAMPER. OUR 7 INCH DAMPER FEATURES A MAGNET ON EACH SIDE THAT HOLDS THE DAMPERS CLOSED UNTIL THE FAN STARTS. THIS REDUCES THE ANNOYING CHATTER FROM WIND GUSTS. MOUNT BETWEEN TWO SECTIONS OF DUCT PIPE. IT CAN BE MOUNTED NEAR THE ROOF TO KEEP COLD AIR OUT OF THE ATTIC. ALL DAMPERS ARE IN STOCK AND SHIP THE SAME DAY OR NEXT DAY.