Nominal Size 17 x 22 x 1. Actual Size 16.5 x 21.5 x 0.75*Merv 11 rated and high-efficiency air filter*Traps micro-particles associated with allergies like ragweed and pollen*Each filter lasts up to 90 days*Pack of 4 Filters
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Item# : SPM12885713304
Model # : RNAB072MLRLYF