Selkirk 3" to 8" Female Universal Adapter (Round - Type B Gas Vent) h51 most Wi-Fi thermostats use 24volts

most Wi-Fi thermostats use 24volts and are not compatible

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Selkirk 3" to 8" Female Universal Adapter (Round - Type B Gas Vent) h51 most Wi-Fi thermostats use 24voltsSelkirk 3" to 8" Female Universal Adapter Used to connect B Vent to from 1 4" Type B Gas Vent. Allows Selkirk B Vent to be used in conjunction with other brands of existing vent. Female adapter used to adapt to Selkirk pipe toward appliance. (RV) Round Type B Gas Vent Model RV Double Wall Gas Vent is the installer's choice for residential, industrial and light commercial applications. The aluminum liner heats up quickly to promote strong draft.