16" x 28" x 4" MERV 8 Air Filters - Only $43.54 Each!
Honeywell CF2400A Merv 10 High-Efficiency Collapsible Air Cleaning Filter
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BestAir 16 In. x 28 In. x 4 In. Aprilaire & SpaceGard MERV 13 Deep Pleat Expandable Furnace Filter - Kellogg Supply
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Aerostar 16x28x4 Collapsible Replacement Air Filter for Aprilaire 413 Air System – Factory Direct Filters
Aerostar 16x28x4 Collapsible Replacement Air Filter for Aprilaire 413 Air System – Factory Direct Filters
HDX FPR 9 Expandable Air Filter 16x28x4 - Fits Aprilaire Space-Gard - Open Box | eBay
Carbon Pet Filter 16X25 Merv 11 – BestAir Furnace Filters, Humidifier Filters & Wicks and Compactor Trash Bags – Made in USA
