My workshop will always need to be a garage first and woodworking shop second. To help with my lumber storage, I decided to build my own lumber rack. I scoured Pinterest for ideas, but I couldn't quite find a design that mounted to a wall while still being able to storage large sheets of plywood and long boards simultaneously.
I decided to make my own design where sheets of plywood would be stored in a large framed shelf, while sporting the traditional arm shelves for storing long boards. I also added some small cubbies for storing small cut-offs and specialty pieces of lumber. In a phrase, this lumber rack is all about boards in the front and big sheet goods in the back - head the name "Mullet-style" lumber rack.
The construction of the rack starts with attaching 2×4s to the wall studs with 4 1/2" lag screws. From there, I attached the frame of the rack, which was primarily supported by 2×8s board. The boards attached to the supports with the Kreg HD pocket screw for extra strength. I then attached the remaining parts of the frame (2×4 boards) with more HD pocket screws.