Furnace Filters 16 x 20 x 4

16x20x4 MERV 11 Optimal Pleated Furnace Filter — Case of 6 | 4-Inch HVAC Air Filter | Made in Canada

16x20x4 MERV 8 Economy Pleated Furnace Filter — Case of 3 | 4-Inch HVAC Air Filter | Made in Canada

16x20x4 MERV 13 Superior Pleated Furnace Filter — Case of 6 | 4-Inch HVAC Air Filter | Made in Canada

16x20x4 MERV 8 Economy Pleated Furnace Filter — Case of 4 | 4-Inch HVAC Air Filter | Made in Canada

16x20x4 MERV 13 Superior Pleated Furnace Filter — Case of 4 | 4-Inch HVAC Air Filter | Made in Canada

12x24x4 MERV 11 Optimal Pleated Furnace Filter — Case of 6 | 4-Inch HVAC Air Filter | Made in Canada