18x24x4 MERV 11 Puracell II, Plastic Frame Box Style, Synthetic MediaPUPFSB182441O $288.40 SKU: PUPFSB182441O Back $288.40 Quantity -+ Add to Cart Details 18x24x4 MERV 11 Puracell II, Plastic Frame Box Style, Synthetic Media DetailsBackDetails18x24x4 MERV 11 Puracell II, Plastic Frame Box Style, Synthetic MediaSee MoreSee Less