Steveston Marine & Hardware has Barrel Bolts for you! Barrel bolts is a locking system that locks a door from a single side. We have a large selection of barrel bolts from Perko, Seachoice, SEADOG, and more! You can find these products in one of our stores located in Vancouver, Richmond, or Langley! Or order online and receive FREE SHIPPING on orders over $99! (Some exceptions may apply)