Single arm dividers, also called horizontal dividers, are similar to m-bar pallet rack dividers, in that they are designed to facilitate vertical storage, they just utilize a different shape to do so. A single arm divider can be added at the top and bottom of a bay of pallet rack to achieve the same effect as an M-bar while maintaining a lower profile. Horizontal dividers from American Surplus are available in 24-42" lengths, and easily install to beams. Speak with a member of our sales team to learn more about our current inventory of used single arm pallet rack dividers.