Honeywell 20x20x4 Furnace Filter Model # FC100A1011 MERV 11. Actual Size 19 15/16" x 19 3/4" x 4 3/8." Case of 3 | Walmart Canada
Filterbuy 20x20x5 Air Filter MERV 11 Allergen Defense (1-Pack), Pleated HVAC AC Furnace Air Filters Replacement for Honeywell FC100A1011 and Lennox X0585 (Actual Size: 19.63 x 19.81 x 4.38 Inches) : Amazon.ca:
FC100A1011-Honeywell FC100A1011 Cartridge Replacement Media Filter 20" X 20 MERV 10 (Quantity Of 5) - HVAC Depot
Honeywell Air Filter MERV 10 FC100A1011 (2-Pack) - Impressive Climate