PadMatch / Every humidifier water panel and furnace filter size
- AprilAire 12
- 11.5 in W x 14.75 in H x 1.75 in D
- AprilAire 35
- 10 in W x 13 in H x 1.75 in D
- AprilAire 12 fits
- AprilAire 112, 224, 225, 440, 445, 445A, 448
- AprilAire 35 fits
- AprilAire 350, 360, 560, 560A, 568, 600, 600A, 600M, 700, 700A, 700M, 760, 760A, 768
Whether the AprilAire 12 and AprilAire 35 humidifier pads interchange.
Both are Aprilaire mesh panels but different sizes: the 12 is 14.75 inches high for the 440 and 445 units, the 35 is 13 inches high for the 600 and 700 units. They do not interchange.
The 12 is the tallest Aprilaire panel. If a replacement stands almost 2 inches proud of the frame, you have a 12 in a 600, or a 35 in a 440. Match the humidifier model number.
Find your model
Read the number stamped on the humidifier cabinet or printed on the old pad, then match it below. Confirm the frame size before buying a generic.
- AprilAire Water Panel 12AprilAire 12
- AprilAire Water Panel 35AprilAire 35
- AprilAire 12 equivalentcross-references
Sources: AprilAire Water Panel 12 product page · AprilAire Water Panel 35 product page · AprilAire Water Panel Guide