PadMatch

PadMatch / Every humidifier water panel and furnace filter size

Part numberTotaline P110-3545 vs Lennox X2661
adapter
Totaline P110-3545
10 in W x 13 in H x 1.5 in D
Lennox X2661
10 in W x 13 in H x 1.75 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
Lennox X2661 fits
Lennox WB2-17, WB2-17A, WB3-17, WB3-17A, HCWB3-17, HCWB3-17A, WP2-18, WP2-18A

Whether the Totaline P110-3545 and Lennox X2661 humidifier pads interchange.

Same fit group, different frame. The Totaline P110-3545 and Lennox X2661 cover the same humidifiers but differ in size.
Fitment notes

The Totaline P110-3545 and the Lennox X2661 sit in the same GA35 cross-reference group and cover the same humidifier slot, but the Totaline P110-3545 measures 10 in W x 13 in H x 1.5 in D while the Lennox X2661 measures 10 in W x 13 in H x 1.75 in D.

Because the frame sizes differ slightly, seat the replacement fully against the water tray so water wicks through the pad rather than running down a gap at the edge. Either one fits the same humidifiers, but a pad that sits loose will drip past.

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) · Lennox Healthy Climate #35 X2661 water panel (LennoxPros)