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Steam / Gravity Systems Dimensions (in
50mm ABS plastic dual scale easy-to-read gauges
Positive stops at 0°
(B) 1/2" CARBIDE HEIGHT (H) 7/16" OVERALL DIA
14"-24" PE
Resideo Honeywell ST9120U1011/U Universal Electronic Fan Timer Board 844A Steam / Gravity Systems DimensionsResideo Honeywell ST9120U1011 U Universal Electronic Fan Timer Board Combustion Blower and Circulating Fan in One Replaces all others. The new universal platform that will not only integrate control of all combustion blower and circulating fan operations in a gas warm air appliance but also replace all other existing Resideo fan timer boards. It now has a replaceable fuse and DIP switch with selectable heat and cool delay for added flexibility. This