16.38x21.5x1 - Air Filter for AC and Furnace | AirFilterExpress – Air Filter Express
Filter King Air Filters 16.38x21.5x1 | 4-PACK | MERV 13 HVAC Pleated AC Furnace Filters | Air Purifier | Replacement Filters for Clean, Healthy & Fresh Environment | MADE IN USA - Amazon.com
Filter King Air Filters 16.38x21.5x1 | 6-Pack | MERV 11 HVAC Pleated AC Furnace Filters | Actual Size 16.38 x 21.5 x .75" - Amazon.com
Filter King Air Filters 16.38x21.5x1 | 6-Pack | MERV 11 HVAC Pleated AC Furnace Filters | Actual Size 16.38 x 21.5 x .75" - Amazon.com
SpiroPure 16.38 x 21.5 x 1 MERV 11 Pleated Filter Air Filters - Made in USA (6 Pack) - Amazon.com