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Always refer to the Lennox unit diagram and local codes
or a restricted chimney/vent pipe
Featuring 1/2" ODF sweat connections
this kit provides a drop-in solution that maintains the original equipment’s manifold pressure specifications and gas-fired safety standards
whereas the legacy -931 utilized sweat stub-outs
Markel ET9DTS Thermostat 320819-301 Always refer to the LennoxThe Markel ET9DTS Thermostat is a professional grade line voltage thermostat designed specifically for heavy duty electric heat applications. This industrial double pole single throw (DPST) control provides high capacity performance for resistance heating elements and unit heaters in commercial or residential settings. Built with a bimetal bimetallic actuator and a snap action switch, the ET9DTS ensures reliable cycling and a long service life under