Accumulair 16x25x5 (15.38x25.5x5.25) MERV 13 Aftermarket York Replacement Filter Nominal Size 16x25x5 Actual Size Measures 15.38 x 25.5 x 5.25 Electrostatically charged filter media captures airborne allergens smaller than 1 micron MERV Rating: 13 Lasts up to 3 months Part Number: DPFPC16X25X5M13=DYO