5" x 1.25" stem casters. Choice of polyurethane or rubber wheelsFoot plates to bolt racks to the floorShelf edges to prevent items from fallingExtra shelvesLeveling feet protect flooring and level racks on uneven surfacesPost clamps join units together and 'S' hooks are needed when adding shelvesSnap in 8" high shelf dividers keep shelves organizedReplacement post sleeves and posts
Replacement shelves - 24 in x 72 in