Available in single or dual wall plate, flush mount or surface mount options, with or without weatherproof cover or box Compatible with Infratech Dual Element Heaters, CD-Series & WD-Series Range 120/277 VAC (20 amps max per switch) All components proudly made in the USA and supported by Infratech’s exclusive Three Year Warranty Expert configuration and installation required, please consult a licensed electrician Designed for use with all dual element heaters, the Duplex Stack Switch is the low cost control option for Infratech CD or WD-Series heaters. The Duplex Stack switch allows the ability to turn on and off each heating element independently, providing half power/ full power capabilities.