Used Keystone pallet rack gets its name from the shape of its uprights, also called republic pallet rack. Square beam clip hooks boost strength and safety. This pallet rack was once more widespread, but it’s still used in commerce. If your company uses a Keystone/Republic system or needs a high strength-to-weight ratio, this solution may be appropriate.
In a keystone system, the column corners are solid and keystone clips are installed in places of least stress to bear a heavy load. The unique shape decreases pallet stress and protects against shredded metal. Z-shaped U-shaped supports offer strength to a keystone pallet rack.