X6672 Replacement for Lennox X6672 16x25x5 MERV 16 Furnace & AC Air Filter

Part Number: X6672-2 Replaces Part Number: X6672 Pack Size: 2 Filter Life: 6 - 12 Months MERV Rating: 16 Nominal Dimensions: 16" x 25" x 5" Actual Dimensions: 15-3/4" x 24-3/4" x 4-3/8" How do you install the Lennox X6672?‌ Unwrap the new Lennox X6672 filter and place it in front of the old one so that you can see the bottom of the old filter. Use a vacuum cleaner to remove any dirt from around the old filter. Remove any obstructions from behind or below the furnace. Remove any debris from around the furnace itself. Ensure that no edges or corners are tucked into another compartment. Line up tabs on top of the filter with slots on top of the blower. Locate arrows on the backside of the frame. Align frame with slots on top of the blower. Press down on the frame until it locks. Changing your Lennox X6672 is a very quick and easy process that should be done once every twelve months.