Ultravation 91-006 20x25x5 MERV 11 Filter

Ultravation 91-006 OEM (Genuine) replacement filter for the following Abatement units: Air Cleaner Models 90-007, 90-008, 90-017, 92-001, 92-002, 92-003, 92-109, 92-110, 92-111, 92-043, 92-044, 92-045, 92-112, 92-113, 92-114 Air Cleaner Models 92-007, 92-008, 92-009, 92-130, 92-131, 92-132 Air Cleaner Models 92-013, 92-014, 92-015 Ultravation 91-006 is the 20 x 25 x 5 MERV 11 original equipment manufacturer replacement filter. The actual size of the 91-006 air filter is approximately 19 3/4 x 24 1/4 x 4 3/4. Ultravation recommends you change the 91-006 filter every 4 to 6 months under normal operating conditions. This filter is NOT washable!