This new product by DLP Industries is an operational window insert/door combo for a standard size exterior dooropening. This product is available in both full light or half light configurations making it the perfect new alternative to the old jalousie style doors. When the window is open, fresh air is introduced into the home, eliminating the need for a screen door. This product is offered with an amazing security screen option. With the window open, the security screen allows the cool breeze in and keeps the insects out, all without compromising security.