1.Profile Thickness: 1.4mm, Frame: 115mm width.2.Frame connect by 90° screw and Sash connect by 45° angle connector.3.Edge frame is the split design to do punching and retaining process.The screw of Top fixed& Top sliding and Bottom-fixed & Bottom sliding are at same position, so it would use thesame punching machine.4.The size of frame and sash are same.Install the side-lock or multi-point handle lock, otheraccessory can be universal.5.Glass slot: 25mm, could install 5mm+12A+5mm or 6mm+9A+6mm tempered glass.6.1.5m ×1.5m standard window: 9.3kg/m2 .7.Suitable for Balcony.