A well constructed design that is supported on all four corners to give exellent stability, with millions of doors installed across the UK this is the second most popular garage door in the market place today. The door runs horizontaly in top tracks that runs back into the garage and are supported by two lifting arms one on either side, is lifted easily with the help of springs which are fitted down the side of the door frame and have multipul springs which help prevent the door from falling down in the event of of a spring failure. It get's its name "Retractable" because it retracts fully into the garage when open. It is well suited as a manual or automatic garage door and can be installed into an existing timber frame or can be supplied pre-installed onto it's own steel frame. Existing doors can be automated easily.n.