EXT product line is made from exterior grade plywood. Box should be painted or sealed with exterior paint or polyurethane if storing in outdoors. All of our boxes are proudly made in our professional custom cabinet shop. We use only quality 3/4″ plywood – no cheap Chinese import plywood like other manufacturers and resellers. All of our boxes include oval carry holes on two sides for convenient transport. The outside edges are rounded over and hand sanded to eliminate sharp, dangerous edges. The main screw holes are pre-drilled with counter sink bit. Packaging includes glue, # 2 Phillips head screws, and detailed, easy to follow assembly instructions. Ships flat to save on assembly and shipping costs.