Spring door provides a double directions opening way. It is widely used in commercial projectsPerimeter of the door leaf is sealed with two wool tops rubber rings. It can be made into Single-glass door and insulating glass door. The frame and leaf design are decorated with lines. This product has the characteristics of big strength, good sealing performance, and good look decorative effect.Packaging:1.Inside wrap the window corner with foam layer and aluminium frame with protective film.2.Out side wrap the window with hard cardboard to avoid dust.3.Put on wooden crate or plywood crate fixed with steel nails.Do not hesitate to show us your desired windows and doors, we will help you find the one that matches you best