16x25x3 Furnace Filter MERV 11 Aftermarket GF 4521/X0581. Case of 4
- Generic 16 x 25 x 3 MERV 11 Rated Pleated Filters
- Actual Size 15 7/8" x 24 1/4" x 3"
- Replacement for Generalaire GF 4521 and Lennox/Healthy Climate X0581
- Manufactured in Canada
- Case of 4