Telescoping Top for a 10 frame box. We went the extra mile to make these a quality top by having a custom aluminum pan pre bent to meet the size of our boxes. Notice the nice clean bends and sharp corners. We we screw the corners together and use brass brads to nail down the tops to prevent rust. They are powder coat painted white. Underneath the aluminum top we added thickness with a 1/2 inch plywood top. Lesser boxes use 1/4 and 3/8 inch thick tops.