Specially designed sliding doors & window with theft guard system. Interlock – 25mm Suitable for 5 mm to 24 mm glass. Corners of doors & window are made by special aluminum die cast/Corner cleat for nice45° /90 ° joint. Uses special PVC wall connector for alignment of window and create space from Masonry. Available in a number of different finishes. (powder coating, anodizing,wooden Finish etc.).