Tier1 20x20x5 Merv 11 Pleated AC Furnace Air Filter 2 Pack (Actual Size: 19 11/16 x 20 11/16 x 4 7/8)

Tier1 20X20X5 Merv 11 Pleated AC Furnace Air Filter is a replacement for Trion Air Bear: 255649-103, 255649-003, 266649-103, 255149-003, 259112-103, 248713-103, 255149-003, 229990-103, 229990-003, 435790-001, 455604-001, 455602-019, 459200-007, 455602-225, 455602-227, 455604-019, 459200-005, Skuttle: 448-3, 000-448-003, 000-0448-007, DB-20-20, GeneralAire: 4531, 4556, 5FM2020, 6FM202, Source 1: S1-FM10202005, S1-MAC202005, and Ultravation 91-013, 91-028. MERV 11 filters capture particles 1-3 microns in size.