Nominal size: 16 x 25 x 3, actual size: 15 3/4" x 24 1/4" x 3" comparable to filtrete mpr 1500 and 1550 ultra allergen defense replaces air bear part numbers: 229990-101, 435790-028, 488902-002 replaces bryant/carrier part number: p101-1625, p101-1625a, keaflo106012, p101-mf12, mac1200 change frequency 12 months. made in the usa
