Aprilaire 3G-OTH-723623 — Technical Specifications

Name: Aprilaire 3G-OTH-723623 Humidifier Pad: Humidifier Pad, Duct Mount Humidifier, 31TP24/31TP25, 400/400A/400M, Kraft Paper (MPN 45). Key specifications — Compatible Manufacturer Model Number: 400A.
Brand: Aprilaire

The Aprilaire Humidifier Pad (MPN 45) is a Kraft Paper replacement pad designed for duct mount humidifiers, compatible with models 400, 400A, and 400M, as well as part number 31TP24. It serves as a direct replacement for the 31TP24/31TP25 series humidifiers, ensuring proper moisture transfer in forced-air HVAC systems.

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Technical Specifications

Parameter	Value
Type	Duct Mount Humidifier, 31TP24/31TP25, 400/400A/400M, Kraft Paper
Manufacturer Part Number	45
Compatible Grainger Part Number	31TP24
Compatible Manufacturer Model Number	400A