Trebor underbody toolboxes are the ultimate accessory to your Grainmaster truck body. One of the world’s leading manufacturers of mobile equipment, and they’re known for their strength, dependability and innovation.

Grainmaster carries a large range of heavy-duty steel and lighter aluminum underbody tool boxes in various sizes and configurations. All feature reinforced door backbone for strength and latch protection, extra-thick, moisture-resistant seals and features to keep your valuables free from damage.