the single speed adjustable thermostat. it can adjust from 60 to 120 degrees. this thermostat is a replacement for specific roof mount and gable mount power fans. the model numbers this should be used with are as follows: 53828, 53827, 53829, 53830, 53833, 53831, 53832, 53853, 53854, 53315, 53316 & 53319.

• Automatic thermostat
• Pre-wired
• Adjustable control