This motorized vent damper functions by closing the flue pipe during the furnace's off-cycle

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High BTU Capacity: Manages up to 550

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Lennox X8310 Filter 319825-402 This motorized vent damper functionsThe Lennox Healthy Climate X8310 is an OEM expandable MERV 11 filter designed for high efficiency air cleaners. This genuine HCXF20 11 replacement media measures 20x25x5 inches nominally, with actual dimensions of approximately 20. 75" x 24. 75" x 4. 38". Engineered for the Lennox X8304 housing, this accordion style furnace air filter utilizes a synthetic 20x25x5 MERV 11 pleated design to capture airborne contaminants as small as 0. 3 microns,