Greenhouse Growing Tips Great greenhouse tips and useful information to keep your greenhouse running efficiently. ::Construction Tips ::Garden Tips ::Articles How to Select Evaporative Cooler Size: Determine the volume of your greenhouse – length x width x height. This number is the recommended “CFM rating” for your greenhouse cooler. Select a cooler with this or a higher CFM rating. Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment *Name * Email * Website Save my name, email, and website in this browser for the next time I comment. This site uses Akismet to reduce spam. Learn how your comment data is processed.