Lochinvar & A.O. Smith 100275527 Flue Sensor 321042-401 Is the Danfoss 121L3277 a
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Description
Lochinvar & A.O. Smith 100275527 Flue Sensor 321042 401 Is the Danfoss 121L3277 a Is the Danfoss 121L3277 a replacement for the 120U3277 Long Term Reliability: Tested for over one million cycles with a replaceable ring packing design to extend the service life of the valve body