I knocked together the framework for the big storage rack today, it will hold frames up to 6ft long, it still needs some uprights fitted, similar to the under bench racks in the photo above. This will allow 2 or 3 frames in each rack, so it should be able to comfortably fit 12 to 16 large frames.
Once this rack is finished, that will be it for frame storage in the workshop, next job on the list is a display shelf unit for the ready made frames in the reception room.