20x20x4 MERV 13 Puracell II, Plastic Frame Single Header, Synthetic MediaPUPFSH202042O $230.72 SKU: PUPFSH202042O Back $230.72 Quantity -+ Add to Cart Details 20x20x4 MERV 13 Puracell II, Plastic Frame Single Header, Synthetic Media DetailsBackDetails20x20x4 MERV 13 Puracell II, Plastic Frame Single Header, Synthetic MediaSee MoreSee Less