Wall-mount thermostat. This bimetal thermostat is the most common and economical choice for wall mount, electric resistance heating. Controls temperature within 3 deg.. Industrial grade Micro-Switch for extended life. Can replace most wall-mount line voltage thermostats, are recommended for baseboard and in-wall fan heaters. They are UL and CSA listed and are rated at 22A. Vented at top and bottom. Grounding screw included. Factory calibrated. 4-1/2" H. x 2-3/4" W. x 1-1/8" D. White.