Diy Wall Weight Plate Holder . This video shows how i built a wall mounted weight rack This second option doesn’t even require instructions. Great Design for a Plate Rack with Bar Storage (photo 2) No equipment from www.pinterest.es I used 2”x6”s cut to match the internal width of the box for the heavier plates, but. Once you have made your cuts, take your (4) 4×4 brackets and screw them on center of the (2) 26” 4×4 boards. Dumbbell racks can really clean up your home gym and make your equipment feel more organized.