The river runners original dry box. These boxes are used, military surplus, built to last, and in fair condition. Exteriors of 20 mm boxes are rusted but the interiors are in good condition. Get one and enjoy having a rugged, easy to rig, waterproof place for personal gear, a repair kit, first aid supplies, kitchen supplies, etc.

The 20 mm rocket box is approximately 14.5" tall, 17.5" long, and 7.5" wide.
The 30 mm rocket box is approximately 14" tall, 17" long, and 8.75" wide.
The 40 mm rocket box is approximately 10" tall, 17.5" long, and 5.75" wide.