The Active Cargo System truck bed rack uses integrated gear boxes for locking, water-resistant storage which easily mounts onto your rack. They have some great advantages over other gear storage systems:
Easy access - While most truck toolboxes use up valuable space in your truck bed and are difficult to load and unload, the ACS integrated gear box is side-mounted. The side mounting allows quick and easy access to all your adventure gear while keeping it safe from the elements with an automotive-grade silicon seal.
Quick install and removal - An ACS integrated gear box can be installed on or removed from your ACS rack within seconds using 4 T-bolts and nuts.
Specifications - Active Cargo System Integrated Gear Box
Manufactured from roto-molded high-density polyethylene (same as kayaks)