GENERALAIRE Part # GFI 4531 / MacTwenty, Genuine 20x20x5 MERV 10. Package of 3
- Generalaire Part # GFI 4531
- Actual Size 20 3/4 x 19 3/4 x 4 15/16
- MERV 10 Rated
- Made by ReservePro Parts for Generalaire
- Replacement MAC TWENTY Filters
- Also for: S1 # S1-FM10202005, Source 1 # S1-MAC202005, Trion # 255649-103, Skuttle #448-3, Skuttle DB-0020-020, Air Bear Supreme 20x20, Generalaire MAC TWENTY
- Package of 3