Sliding glass door is a type of sliding door in architecture and construction, is a large glass window opening in a structure that provide door access from a room to the outdoors, fresh air, and copious natural light. A sliding glass door is usually considered a single unit consisting of two panel sections, one being fixed and one a being mobile to slide open. Another design, a wall sized glass pocket door has one or more panels movable and sliding into wall pockets, completely disappearing for a wide open indoor-outdoor room experience.
Security design in the doors is aimed at preventing the doors both fixed and sliding from being lifted off their rails, anti-lift blocks can be fixed to the top of the frame to prevent the lift of the door off its rails, so in theory preventing unauthorised entry to the room when sliding door is in the closed position. A portable security bar can also be fitted from the inside the room to prevent sliding action when door is closed. The adjustable security bar can also be used for added security when traveling.