Ultravation 91-026 20x25x5 filter (actual dimensions 19 3/4" x 24 1/4" x 4 3/4""). Rated MERV 13.
Factory Original 91-026 Ultravation Filter!
Five inch Ultravation Progressive Media filters are designed to last about six months under normal circumstances. Your results may be different, depending on air conditions in your area. Dusty area may require more frequent replacement.
Case of three Ultravation Model 91-026 Progressive Media Filters.
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