Nominal Size: 28 x 30 x 4, Actual Size: 27 3/8 x 29 3/8 x 3 5/8 (27.38 x 29.38 x 3.63) Measure your current filter and compare the exact dimensions with the Actual Size listed above before you order. Made with MERV rated synthetic poly blend pleated media Ideal for customers with health problems or for commercial units which support a rating of MERV 14 and above Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame.
