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Part numberTotaline P110-3545 vs Trane BAYPAD02A1310A
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Totaline P110-3545
10 in W x 13 in H x 1.5 in D
Trane BAYPAD02A1310A
10 in W x 13 in H x 1.5 in D
Totaline P110-3545 fits
Carrier, Bryant, Payne and Day & Night bypass and fan-powered humidifiers that take a 10 by 13 inch panel
Trane BAYPAD02A1310A fits
Trane HUMD300A, HUMD500A, THUMD300ABA00B, THUMD500APA00B

Whether the Totaline P110-3545 and Trane BAYPAD02A1310A humidifier pads interchange.

Interchangeable. The Totaline P110-3545 and Trane BAYPAD02A1310A fit the same humidifiers.
Fitment notes

The Totaline P110-3545 and the Trane BAYPAD02A1310A are in the same GA35 cross-reference group and share the same published size, 10 in W x 13 in H x 1.5 in D. A humidifier that takes one takes the other.

They are the same size, so the only real difference is brand and, on some pads, an antimicrobial coating. Buy whichever is cheaper for your unit and replace it once a season.

What to buy

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.

Related

Sources: Totaline P110-3545 humidifier water panel (Humidifiers.com) · Industry evaporator-pad cross-reference chart (2J Supply) · Trane/American Standard BAYPAD02A1310A humidifier water panel (Walmart) · Trane fan-powered and bypass humidifier product data (Trane library)