4-wire control box package used when adding a/c to a 3500 or EB series downflow electric furnace that is not a/c equipped. Used with a 4-wire heat/cool thermostat (not included). May be adaptable to older electric furnaces.
Package includes a 40VA transformer, 24V fan relay, wires, plugs, drain hose, condensation trap & box.
Replaces 3500-584, 3500-5841 & 3500A5841.