Honeywell 20x20x1 Ultra Efficiency Allergen MERV 13 Air Filter, 12 Pack MPN: HW20X20X1M13_12 (11) $154.95Save: $65.00 Quick view Honeywell 14x20x1 Ultra Efficiency Allergen MERV 13 Air Filter, 12 Pack MPN: HW14X20X1M13_12 $154.95Save: $65.00 ...