20x20x4 MERV 11 Puracell II, Plastic Frame Box Style, Synthetic MediaPUPFSB202041O $217.96 SKU: PUPFSB202041O Back $217.96 Quantity -+ Add to Cart Details 20x20x4 MERV 11 Puracell II, Plastic Frame Box Style, Synthetic Media DetailsBackDetails20x20x4 MERV 11 Puracell II, Plastic Frame Box Style, Synthetic MediaSee MoreSee Less