The RSI General Purpose Greenhouse & Small Building Electric Powered Exhaust Fan System is designed to fit all structures

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and S-hooks make it easy to adjust your setup as your plants grow and your greenhouse needs change

Adjustable wall mounting plate to meet your desired height

shatter resistant

Exaco | Air Intake Vent with Shutter Size:24 inch The RSI General Purpose GreenhouseThe Air Intake Vent with Shutter, for use in conjunction with an exhaust fan, allows controlled airflow through your greenhouse. May also be used as a free air exhaust. Usually positioned in a high location in the lowest panel in the front wall. This is a motorized vent, and comes pre wired with a 9 foot plug in power cord with 3 prong plug. No electrician needed. Ships fully assembled out of the box so you're up and running in no time! 16" is