PadMatch

PadMatch / Every humidifier water panel and furnace filter size

Part numberTrane BAYPAD02A1310A
ok
Humidifier models
Trane HUMD300A / HUMD500A / THUMD300 / THUMD500
Correct pad
Trane BAYPAD02A1310A
Pad dimensions
10 in W x 13 in H x 1.5 in D
Replacement interval
once per heating season

The correct replacement pad for the Trane HUMD300A / HUMD500A / THUMD300 / THUMD500, and the sizes that look right but are not.

The Trane HUMD300A / HUMD500A / THUMD300 / THUMD500 takes the Trane BAYPAD02A1310A pad. Buy that part; a different-size pad lets water bypass into the plenum.
Fits these humidifier models
Fitment notes

The Trane and American Standard HUMD300 and HUMD500 fan-powered and bypass humidifiers take the BAYPAD02A1310A 10 by 13 panel, which cross-references to the Aprilaire 35.

The Trane and American Standard panel for the HUMD300 and HUMD500 fan-powered and bypass humidifiers. It is a 10 by 13 inch panel in the same cross-reference group as the Aprilaire 35.

The pad to buy
Search Amazon for Trane BAYPAD02A1310A humidifier water panelaffiliate searchFind Trane BAYPAD02A1310A humidifier water panel on eBayaffiliate

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.

Trane HUMD300AHUMD500ATHUMD300THUMD500
Related

Sources: Trane/American Standard BAYPAD02A1310A humidifier water panel (Walmart) ยท Trane fan-powered and bypass humidifier product data (Trane library)