- 13 - N Series User ManualLeading LED ApplicationsSub-frameFront installation holeSub-frameWall-mounting SolutionFront Installation Instructions (Wall-mounting)Install cabinets onto the sub-frame or fixed structure, and then directly mount the sub-frame onto the wall,to achieve wall-mounting installation.Step 1:Install cabinets onto the sub-frame and splice 2 to 4 cabinets. Number of cabinets is based on actualrequirements at installation site.Wall Wall mounting device