2. For recessing A Expansion Adhesive $6#25/4 Tools Pencil Electric drill ens ยข :Schnozzles) Hammer Tape Measure Track level bar Cross Screwdriver 2 A Accessories \ Screw M4*30/4 Remove the both of side mirror with screwdriver Measure the width and height of back side of cabinet. 3. According to No.2 ,Draw a leveled rectangle on the wall with track level bar,that is about 1/5 inch larger than the cabinet recess in both width and height to make sure the fit not too tight.