This Tier1 16X25X3 surroundings filter can be graded at MERV 8 to capture particles 3-10 microns in dimension. Substitute for: GeneralAire 14164, 3FM1625, 4521, Trion / Surroundings Keep 255649-101, 229990-101, Quality Filters SBTRABC40 and SBTRABCMQP. Ranked at MERV 8 to capture particles 3-10 microns in size. Substitution for: GeneralAire 14164, 3FMeters1625, 4521, Trion / Surroundings Keep 255649-101, 229990-101, Quality Filter systems SBTRABC40 and SBTRABCMQP. 98% effective filter press that conveys small dirt particles before they can collect on your coils. This product is detailed and graded by Underwriters Laboratoriés as U.D.

MERV 8 Filter Pads MERV 8 Roll Media. Whole House Media Filters / Trion Air Bear 259112-101 16x25x3 Compatible Filter by Magnet. 488902-002, 14164, 4521, 229990. No Reviews Have Been Made Write a Review. GeneralAire 4521 Air cleaner, Furnace Filter. MERV8 Use with GeneralAire Mini-Mac MAC1200, Lennox BMAC-12C, Totaline P101-MF12, Trion Air Bear Cub / TM / Grille Mount 1200.

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