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The NORDIC PURE 20x20x5ABM10-2 is a MERV 10 pleated air filter designed as a direct replacement for Trion Air Bear filter systems. Sold in a 2-pack, each filter has a nominal size of 20x20x5 with an actual size of 19.69 x 20.69 x 4.94 inches, making it critical to verify measurements before ordering. The electrostatic, antimicrobial filter media captures pollen, smoke particles, pet dander, bacteria, allergens, mold spores, and virus carriers. The heavy-duty beverage board frame is moisture resistant and includes two strips of foam tape on two sides, plus a metal mesh support grid bonded to the pleats for structural integrity. Licensed HVAC technicians and knowledgeable homeowners install this filter in forced-air systems equipped with the Trion Air Bear deep-media filter cabinet.
This filter fits residential and light-commercial forced-air HVAC applications using the Trion Air Bear deep-media filter housing that accepts a 4 15/16-inch depth filter. It is rated MERV 10, which is equivalent to MPR 1000, making it a significant upgrade over standard fiberglass, poly disposable, and non-electrostatic washable filters. Regular replacement every 3 to 6 months is recommended to maintain system airflow and filtration efficiency, though replacement intervals may vary depending on indoor air quality conditions, occupancy, and whether any renovation work is ongoing.
Designed as a replacement for Trion Air Bear filter housings that accept a nominal 20x20x5 filter with an actual depth of 4 15/16 inches. The input-referenced OEM replacement part number is 255649-103. Verify the actual interior dimensions of the filter cabinet before installation, as nominal and actual sizes vary by manufacturer and housing generation.
Filter replacement in deep-media cabinets is typically performed by a licensed HVAC technician or a qualified service professional, though knowledgeable DIYers can complete the task with basic hand tools. Always shut down the furnace or air handler at the unit disconnect and thermostat before opening the filter cabinet. Insert the filter with the airflow arrow pointing toward the blower and confirm the foam tape seats flush against the cabinet frame to prevent unfiltered bypass air. Follow the equipment manufacturer guidelines and any local mechanical codes for filter maintenance intervals.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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