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General Aire 1099-9 Thumbnut

SKU#: 10999
List Price: $2.10 Sale Price: $1.75
Product Description

The 1099-9 thumbnut is a screw that secures the trough cover to the distributor trough. The cover shields the distributor trough, which disperses water onto the humidifier pad. If the trough cover needs to be replaced, it is a good idea to also replace the thumbnuts. This part fits models 747, 747L, 1099, 1099L, 1099LH, 1040, 1040L, 1040LH, 709, 709L, 709LH, 1040R, 1099R, 709R, 1042, 1042R, 1042L, 1042LH, 1137R, 1137, 1042DM, 1042DME.

This component is also known as part number: 7043. Replaces 12408

The manufacturer is sometimes referred to as General Filters, General Air but is correctly spelled GeneralAire®.


1/2 (inch)
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Product Reviews

Add your review of this product Global rating: 5.00 from 2 reviews
Jan 5, 2014
Furnace Humidifier Part by ( )

A thumbnut, perfect replacement for dropped part.

Jan 4, 2012
thumbnut review by Byron Kuxhaus (Royal Oak MI US)

Assume 5 is the highest. Surprised they came packaged individually. Bought them for spares for future use when I lose one!


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