Metal mesh replacement humidifier filter fits General furnace mount humidifier models 709, 990, B40, B-40, 1040, 1042, 1137, SL16, SL-16.
Replaces original General part number 990-13.
The filter is also industry defined as a media filter, water evaporator pad, or water panel, and is sometimes noted as being manufactured by General Aire or GeneralAire.
Original part number 99013, 990-13, G13.
Posted by David York on 15th Nov 2012
There were other versions of this filter around Denver. But, they all cost more...even with the shipping tacked on...and didn't have the metal surround on the medium. I'm from KC and will continue to use MarBeck for name-brand appliance parts replacement.