Generalaire 4556 / 4531 Furnace Filter 20x20x5 MERV 10 Upgraded to MERV 11 GFI 4556 for MAC Twenty. Package of 3
- Generalaire Part # GFI 4531
- 20 x 20 x 5 Media Pleated Filter
- Replacement MAC Twenty Filters
- Actual/Exact Size 20 5/8" x 19 3/4" x 4 15/16"
- MERV 10 Rated
- Made by ReservePro Parts for Generalaire
- Package of 3
- Pick Up in Store $90.00