The AS 32 Auto Shutter Door System closes the opening created when the Versalift Attic Lift system is in the down position. If you have a Model 32 Versalift that is installed indoors, this is a good addition. The Versalift Safety door was designed to close the open hole that is there when the Versalift is lowered. This is great for interior installs of the Versalift. The picture to the right shows the lift in the "up" position and to the right is the lift in the "down" position with the Auto Shutter Door closed.