Lean-To Powered Ventilation System

Automatically cool your sunroom

A narrow home-attached greenhouse will receive adequate fresh air from a single oversized intake shutter. It is preferable to locate the fan on the end wall opposite the door, and the shutter next to the door. The fan is matched with a specific size of shutters to provide you the optimum airflow. The weather-resistant thermostat allows you to set the operating temperature to turn your system on and off automatically. A fan speed control enables seasonal adjustments to airflow. Shutter motors hold shutters wide open for maximum airflow.

System includes shutter-mounted exhaust fan, shutter with shutter motor, a water-resistant thermostat, and fan speed control. Standard aluminum finish. 

This is a hard-wired system. For your protection, all electrical connections must be made by a qualified electrical contractor.

Airflow quantifies the amount of air a fan delivers and is measured in CFM = cubic feet per minute. The higher the CFM, the more effective the fan, and the more air it moves. (See Charley's Tip PDF below for how to select fan and shutter size for your greenhouse.)

Frame opening should be square and 1/2" larger than fan or shutter size.

Allow 2-3 weeks for delivery.

Click here for general fan system instructions PDF.

Click here for Charley's Tip PDF - How to size a Fan System.