Our 20x20x4 White-Rodgers (FR1600M-111) compatible air filters are specifically built to substitue for the name brand White-Rodgers 20x20x4 air filters. These air filters are MERV tested to ASHRAE 52.2 test classifications assuring that our filters will capture particulate as good or better than the original manufacturer part number (FR1600M-111) filter. These air filters are available in Odor Ban odor eliminating carbon-infused media. *Company names are used for filter replacement identification purposes only.
- 20 x 20 x 4 nominal size.
- 19-1/2 x 19-1/2 x 3-3/4 actual size.
- Replaces White-Rodgers brand 20x20x4 part number: FR1600M-111.
- Accumulair Envaero brand.
- Engineered to replace the name brand filter.
- Filters framed and preassembled for ease of intallation. (Non-expandable, no end caps needed, etc.)
MERV graded to ASHRAE grades.
- Available with Odor Ban odor reducing carbon-inlayed media.
- 2 air filters to a case.