Designed to protect against freezing and condensation, it is durable and safe to use. These rectangular wire-wound silicone moisture-proof heaters can be ordered separately (with adhesive) or vulcanized to an aluminum mounting plate. The thermostat can be attached to the heater or installed separately. Pictured is a moisture-proof heater unit with a thermostat on the heater in the foreground and a heater with a remote thermostat in the background.