Replacement accessory for roof-mount and gable-mount power fans. Turns the fan on based on the temperature setting. Temperature settings can be adjusted based on the attics needs. Single speed adjustable thermostat, adjusts from 60 to 120 degrees, to be used only with roof mounted & gable mounted attic ventilators, can not be used in conjunction with whole house fans, should be used with 58033 #’s 53828, 53826, 53827, 53829, 53830, 53833, 53831, 53832, 53853, 53854, 53315, 53316 & 53319.
