Installation diagrams and track charts are inset with a cut amount of 0.2 inch (5 mm), door thickness 0.8 inch (20 mm), side plate thickness 0.8 inch (20 mm). Includes catch: The inset uses an original turn-lock method and can be installed by simply pushing it from the top (one-touch).This smoothness is more efficient than the more you install it. Door position can be adjusted with one screwdriver and one hand3-dimensional positions can be adjusted from front and back, up, left and right. 3-dimensional adjustment of the door.(Front and Rear + 1.5m, -2.5mm, Top + Bottom ± 2.5mm, Cover [Left & Right] + 0mm, -4mm)