NEW! SUBSCRIBE AND NEVER FORGET TO ORDER AGAIN QUICK REORDER Aprilaire Air Filter Replacements 16x28x6 15 7/16 x 26 15/16 x 6 (15.44 x 26.94 x 6)Replacement for Model Number/Part Number2400, 401, SBRP2440, SBRP24GQP, SBRP24MQP, SBRP24OB View Product 20x25x6 19 3/4 x 24 1/4 x 6 (19.75 x 24.25 x 6)Replacement for Model Number/Part Number201, 2200 View Product Aprilaire Space-Gard Replacement 2200 (201) Air Cleaner Filter Accordion 2 PackReplacement for Model Number/Part Number View Product Aprilaire Space-Gard Replacement 2400 (401) Air Cleaner Filter Accordion 2 PackReplacement for Model Number/Part Number View Product Aprilaire Space-Gard Replacement Air Cleaner Filter 213/210 Accordion 2 PackReplacement for Model Number/Part Number View Product Aprilaire Space-Gard Replacement Air Cleaner Filter 413/410 Accordion 2 PackReplacement for Model Number/Part Number View Product