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Ships within 48 hours · Estimated delivery Aug 14 - Aug 19
This filter is comparable to 3M Filtrete Ultra Allergen: Filtrete 1250
18" x 24" x 1" MERV 4 - Residential Washable Air Filter - 1 Pack
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20" x 22" x 1" Permanent Washable Air Filter - 1 Pack
Actual Dimensions: 12" x 16" x 3/4
21" x 23" x 1" MERV 4 - Residential Washable Air Filter Residential Washable Air Filter:21" x 23" x 1" MERV 4 - Residential Washable Air Filter This filter is comparable to21" x 23" x 1" MERV 4 Residential Washable Air Filter 1 Pack Actual Dimensions: 21" x 23" x 3 4 These quality filters are built to last a lifetime. They are interchangeable with 1" disposable filters and can be used again and again. The secret behind the filter's performance is its patented stage loading peak and valley design. Instead of face loading (particles captured on the outer surface of the filter) the filter uses stage loading, with each
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