York/Source 1 Aftermarket 16 x 25 x 10 MERV 10 Replacement Filter for S1-MAC10162505. Actual Size 15 3/4" x 24 1/4" x 4 7/8". Case of 3. Made by Dafco Filtration Group/Aerostar. Will replace MAC1400, GF4511 16 x 25 x 5.Case of 3