Accumulair 16x22x5 (15.38x21.88x5.25) MERV 8 Aftermarket York Replacement Filter Nominal size 16 x 22 x 5, actual size measures 15.38 x 21.88 x 5.25 Merv 8 efficiency Great for reducing air borne particles like dust, pollen, and other allergens Part number: Dpfpc16x22x5=dye Lasts up to 3 months