18x24x4 MERV 13 Puracell II, Plastic Frame Box Style, Synthetic MediaPUPFSB182442O $292.40 SKU: PUPFSB182442O Back $292.40 Quantity -+ Add to Cart Details 18x24x4 MERV 13 Puracell II, Plastic Frame Box Style, Synthetic Media DetailsBackDetails18x24x4 MERV 13 Puracell II, Plastic Frame Box Style, Synthetic MediaSee MoreSee Less