18x24x4 MERV 11 Puracell II, Metal Frame Single Header Synthetic MediaPUGSH182441O1 $361.88 SKU: PUGSH182441O1 Back $361.88 Quantity -+ Add to Cart Details 18x24x4 MERV 11 Puracell II, Metal Frame Single Header Synthetic Media DetailsBackDetails18x24x4 MERV 11 Puracell II, Metal Frame Single Header Synthetic MediaSee MoreSee Less