18x24x4 MERV 11 Puracell II, Plastic Frame Single Header, Synthetic MediaPUPFSH182441O $298.08 SKU: PUPFSH182441O Back $298.08 Quantity -+ Add to Cart Details 18x24x4 MERV 11 Puracell II, Plastic Frame Single Header, Synthetic Media DetailsBackDetails18x24x4 MERV 11 Puracell II, Plastic Frame Single Header, Synthetic MediaSee MoreSee Less