18x24x4 MERV 13 Puracell II, Plastic Frame Single Header, Synthetic MediaPUPFSH182442O $302.12 SKU: PUPFSH182442O Back $302.12 Quantity -+ Add to Cart Details 18x24x4 MERV 13 Puracell II, Plastic Frame Single Header, Synthetic Media DetailsBackDetails18x24x4 MERV 13 Puracell II, Plastic Frame Single Header, Synthetic MediaSee MoreSee Less