Aprilaire 413 - 16" x 25" x 4" Healthy Home Expandable Air Filter, MERV 13 As low as $58.90 See Options
Aprilaire 10 - Water Panel for Models 110, 220, 500, 500A, 500M, 550, 558 As low as $21.98 See Options
Aprilaire 35 - Water Panel for Models 350, 360, 560, 568, 600, 600M, 700, 700M, 760, 768 As low as $24.88 See Options
Lennox X6670 - 16" x 25" x 5" Healthy Climate HCF16-11 Air Filter, MERV 11 As low as $35.92 See Options
Lennox X6672 - 16" x 25" x 5" Healthy Climate Carbon Clean HCF16-16 Air Filter, MERV 16 As low as $65.18 See Options