Reservepro 20x20x5 GF #4531 Mac Twenty MERV 10 Upgraded to MERV 11 Part # 4556. Package of 3
- Replacement MAC TWENTY Filters
- Actual Size 20 3/4 x 19 3/4 x 4 15/16
- MERV 11 Rated
- Made by ReservePro Parts for Generalaire
- 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, Generalaire #4531
- Package of 3