20X25X5 P5-Merv 8 Purolator High End Filter, Replacement for Trion Air Bear, Nominal Size 20" W x 25" H x 5" D, Actual Size 19-5/8”W x 24-1/4”H x 4-3/4”D (2-pack) - Walmart.com
Filterbuy 20x25x5 Air Filter MERV 11 Allergen Defense (4-Pack), Pleated HVAC AC Furnace Air Filters for Honeywell FC100A1037, Lennox X6673, Carrier, and More (Actual Size: 19.88 x 24.75 x 4.38 Inches) - Amazon.com
Amazon.com: Ultravation Model 91-006 Progressive Media Filter - 20x25x5 : Home & Kitchen