BestAir AB2025-11R Trion/AirBear 20x25x5 Series 2000 MERV 11 Furnace Filter. Filters out unwanted particles including dust lint mold particles pollen bacteria and virus carriers while allowing cleaner air to flow through. Designed to perform with high efficiency and minimum pressure drop. Minimum Efficiency Reporting Value (MERV) of 11; generating better filtration and fewer particles and contaminants that pass through the filter. Using our best tech and design the BestAir Furnace Filter is manufactured to trap up to 95% of Airborne Particles from 0.3 to 10.0 microns; Actual Size: 19 3/4 x 24 1/4 x 4 7/8 ; Fits Trion? Air Bear? Models: Supreme 2000; 435790-027; 455602-019; 459200-005; Skuttle? Model: DB0-0025-020; GeneralAire? Model: MAC2000; Source1? Model: S1-MAC10202505; Ultravation? Model: 90-007; Braeburn? Model: 162025; 162026