货架背面是墙，空着也是空着，而且我不喜欢在墙上打孔打螺丝，所以这款洞洞板全部是将螺丝上到货架板材上面的，每块尺寸长240mm，高200mm，因为我家货架中间高度是210mm左右，上面连接采用可调节高度的滑动固定器，固定螺丝采用m5x12自攻丝（可先用4mm钻头打底孔，防止板材损坏，根据板厚可改变螺丝长度），每块板之间留有5mm对称孔两个，可以用m5x12以上的圆柱头螺丝螺母固定（比较结实），也有两个绑扎带孔。SOLIDWORKS源文件已上传，尺寸可自行修改。

The back of the shelf is a wall, and even if it is empty, it is also empty. And I don't like drilling holes and screws on the wall, so this hole board is all screwed onto the shelf board. Each size is 240mm long and 200mm high, because the middle height of my shelf is about 210mm. The upper connection uses a sliding fastener with adjustable height, and the fixing screws are M5 self tapping (you can use a 4mm drill bit to drill bottom holes first to prevent damage to the board). There are two symmetrical holes of 5mm left between each board, which can be fixed with cylindrical head screws and nuts of M5x12 or above (relatively sturdy), and there are also two binding holes. The SOLIDWORKS source file has been uploaded, and the size can be modified by yourself.