I might be wrong but wouldnt the cubic ft be 36 ft LxWxH?To ensure enough airflow, you should try to keep your CFM at least 3 times what you the cubic ft of your space is. Since your space is 102 cubic ft, then you would want a fan of at least 300 CFM. This will ensure you have enough air flow to control your temps and humidity. You can also use a controller (under 20 bucks) to control the fan speed. This will help with fine tuning your temps and humidity.