Air Filter, Filter Type Pleated, Performance Rating MERV 17, Actual Depth 11 1/2 in, Actual Height 24 in, Actual Width 24 in, Compatible Grainger Part Number 49K230, 49K231, 817G99, 819X51, 819X52, 819X53, Compatible Manufacturer Model Number AA2200PG-702, AA2200PG230-703, OA2200C-001, OA2200C230-001, OA2200CBF-701, OA2200CMED, OA2200UL-230, OA2200UL-701, OA2200ULBF-701, OA2500 PLUS, OA2500 PLUS-A, OA2500 PRIME, OA2500 PRO, Number of Filters 1, Media Material Aluminum, Fiberglass