... , OBS glass, etc.Customizedb. Thickness: 4mm, 5mm, 6mm, 8mm, etc.c. Space: 6mm, 9mm, 12mm, 16mm, etc.7Hardwarea. American Window Locks ... head screw and wing 10Characteristicsa. Easy cleaning; b. Effortless operationt; c. Improves energy efficiency; d. Elegant apperance and can be used ...