Filtrete 721-4 Pleated Air Filter, 24 in L, 18 in W, 8 MERV, 700 MPR, Fiberglass Frame (Pack of 4)

Filtrete Pleated Air Filter, Electrostatic, MPR Rating: 700, 8 MERV, Polypropylene Filter Media, Fiberglass Frame, 24 in Length, 18 in Width, 1 in Thickness