Duststop 2-Pack Premium MERV 8 Air Filter - 16-in x 20-in x 1-in - Electrostatic Pleated DP-1620PR2 | RONA
Nordic Pure 8 x 20 x 1 Ultimate Pleated MERV 13 - FPR 10 Air Filter (3-Pack) 8x20x1M13-3 - The Home Depot
PRO-SOURCE - 20 x 20 x 2", MERV 8, 35% Efficiency, Wire-Backed Pleated Air Filter - 06222236 - MSC Industrial Supply
Filtrete 12-in W x 20-in L x 1-in 1900 MPR Premium Allergen, Bacteria and Virus Electrostatic Pleated Air Filter in the Air Filters department at Lowes.com