✅ Whole Aluminum Alloy Design - Constructed from thickened aluminum alloy, this retractable screen door effectively blocks out various small animals while also serving to safely partition off pets. At the same time, it allows for the free circulation of natural light and fresh air, creating a comfortable and livable environment for you. ✅ Safety with Lock - The screen door has anti-theft function, the heavy duty mesh is not easy to break, having long service life, safe and ventilated. Also it can be retracted without taking up space, does not affect the normal opening and closing of your door. ✅ Sliding Screen Door - The bottom track adopts 1.3cm thick high rail, no accumulation of dust, no derailment, the top track adopts copper bearing mute wheel, pushing and pulling smoothly with ultra-low noise. ✅ Versatile Indoor Use - Sliding folding doors easy to be cleaned and perfect for front door, french door, kichen, garage door, backyard, balcony, patio. ✅ Dimensions & Installation: Dimensions & Installation: Folding door dimensions are listed as width x height in millimeters. Installation is easy, and all necessary accessories are included. Please confirm the door lock orientation before ordering.