3M
7100364970
Filtrete™ Refillable Filter Kit 1550 MPR RS2003-4-1R, 20 in x 25 in x 4 in (50.8 cm x 63.5 cm x 10.1 cm), 1 Frame & 1 Filter
3M
Filtrete™ Refillable Filter Kit 1550 MPR RS2003-4-1R, 20 in x 25 in x 4 in (50.8 cm x 63.5 cm x 10.1 cm), 1 Frame & 1 Filter