The Expland-A-Pleat™ pleated furnace air filter combines the allergen-trapping efficiency of a MERV 11 filter with an adjustable frame design to fit any size you need. Perfect for odd-sized central air systems or for obtaining that perfect fit to prevent air leaks which allow outside air to bypass the filter. Seven models of Expand-A-Pleat™ air filters are available to fit over 300 sizes! No tools required.4-pack.
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|Number of Filters in Case||4|