The screen and shade are fully retained within the frame on all sides to allow total control of insects, sunlight and privacy. Operating with just a fingertip, Centor’s unique load balancing technology allows screens and shades to glide smoothly across the whole door opening to effortlessly stop at any desired position. When not in use, the screen or shade retracts discreetly into the frame removing visual distractions to the view outside whilst also protecting it from damage, dust or dirt. This is especially important for a seasonally used product.