This L-Shape Panel is easy to assemble and disassemble, the adjustable distance between the side plate and the bottom plate is 32.6 mm. Both the bottom and side panels are equipped with 38mm wide quick installation slots, which can be used with international universal quick installation bases. Both the bottom plate and the side plate are provided with a number of 1/4 threaded holes and 3/8 threaded holes for easy expansion of other equipment. There are two M4 threaded holes on the front of the bottom plate for easy installation and fixation of external lens.