Four Pack Replacement Filters For Holmes AER1 Air Purifier Compatible With 300AH U4R And HAP242 NUC Replaces A D K Fits CAP531 U CAP529 U HAP240 HAP242 HAP412 HAP422 HAP424 HAP706 Each Filter Measures 10 By 4.6 By 1.37 Inches Breathe Easier

AER1 4-pack replacement filter for Holmes and Bionaire units
✔️ 4-pack green filters; 10x4.6x1.37 in; replaces A, D, K; fits Holmes

These replacement filters are designed for Holmes AER1 purifiers and are compatible with a wide range of Bionaire models. Each filter measures 10 x 4.6 x 1.37 inches and should be replaced at least every four months to keep air clear.

✅ Includes 4 filters; each 10 x 4.6 x 1.37 inches
✅ Replaces Filter A, Filter D, Filter K
✅ Compatible with Holmes CAP531-U, CAP529-U, HAP240, HAP242, HAP412, HAP422, HAP424, HAP706, HAP716, HAP9240, HAP9242, HAP9412, HAP9414, HAP9422, HAP9424
✅ Compatible with Bionaire HAP412, HAP422, HAP424, HAP702, HAP706, HAP716, HAP1702, HAP2400, HAP9240, HAP9241, HAP9242, HAP9243, HAP9412, HAP9413, HAP9414, HAP9415, HAP9422, HAP9423, HAP9424, HAP9425, BAP260, BAP520, BAP815, BAP825, BAP9200, BAP9417, BAP9427, BAP9435, BAP9700
✅ Also fits BAP260, BAP520, BAP815, BAP825, BAP9200, BAP9417, BAP9427, BAP9435, BAP9700

💡 What is a replacement filter for air purifiers and why replace on schedule?

Regular filter changes help maintain airflow and air quality in your space. - Maintains filtration efficiency and airflow - Captures dust, pollen, and pet dander - Typical replacement interval is about 4 months with normal use