- Equivalent replacement Aprilaire #35 Water panel
- Healthy Climate Part #X2661
- Fits all Lennox: WB2-17, WB2-17A, WP2-18, WP2-18A
- Fits Aprilaire Models: 350, 360, 560, 560A, 568, 600, 600A, 600M, 700, 700A, 700M, 760, 760A, 768
- Fits Healthy Climate Models: HCWB2-17, HCWB2-17A, HCWB3-17, HCWB3-17A, HCWP2-18, HCWP2-18A, HCWP3-18, HCWB3-18A