Improvements in building correde- flush doors, particularly for large cold

摘要

The door is suspended from an upper rail consisting of closure brackets fixed to the frame of the opening, to which the roller rail is fixed. Between the two is a space occupied by a billet with suspension brackets fixed to the billet and the door. The billet carries nylon rollers lodged in the roller rail. The door at the bottom carries a guide which slides while resting on a ramp adjustable by a nylon bearing solid with a supporting plate fixed to the ground.