− Decrease quantity for Air Filter; ProHDuty; Air Filter; 11 3/8 in. OD x 6 21/32 in. ID x 23 23/32 in. H Quantity + Increase quantity for Air Filter; ProHDuty; Air Filter; 11 3/8 in. OD x 6 21/32 in. ID x 23 23/32 in. H Add to cart