Posts are the skeletal structure that supports wire shelving. The standard 1" diameter fits the collar of each shelf. Our wire shelving posts are available for purchase in 13 different heights (ranging from 6" to 96"), though they can be custom cut to order. If you prefer a taller post, you can use the post extension kits below, though it is recommended that you do not exceed 12 feet high. Each post features notches every 1" with double notches every 5" to easily level your shelves during assembly. All posts come with post leveling feet for uneven floors. You can remove the leveling feet in favor of casters to create mobile storage.