20x20x4 MERV 11 Puracell II, Metal Frame Single Header Synthetic MediaPUGSH202041O1 $276.40 SKU: PUGSH202041O1 Back $276.40 Quantity -+ Add to Cart Details 20x20x4 MERV 11 Puracell II, Metal Frame Single Header Synthetic Media DetailsBackDetails20x20x4 MERV 11 Puracell II, Metal Frame Single Header Synthetic MediaSee MoreSee Less