The Casper DIY self-install double retractable screen door is designed to be used with both in-swing and out-swing doors. Casper retractable screens can be used for French Doors, Patio Doors, Front Entry Doors and other double door applications. Our doors are mounted inside the framework of the door to maintain the beauty and look of your existing doors. At Casper Screens we have harnessed the use of natural ventilation to help cool your home by allowing for the maximum amount of fresh air to enter the home while simultaneously removing the stagnant, warm air. Casper retractable screen doors retract and contract in a smooth, fluid motion with our smart and functional design. When not in use, Casper Screen doors disappear by retracting back into their housing and are out of sight until you wish to utilize them again. Once you have placed your order, we will send you the measuring instructions and will follow up with a phone call to record the measurements you have taken. We will then custom cut the door to the specified size and ship it mostly assembled to you. When ordering please make sure provide a working telephone number so that we may contact you.