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The GeneralAire 1137-4 Humidifier Distributor Trough fits the following models of humidifiers:
This GeneralAire 1137 series humidifier part is the humidifier's distributor trough, and does not include the trough cover assembly or the thumbnuts. The GeneralAire 1137-4 distributor trough is also known as GeneralAire part no. 7333.