All storage containers for rent occur standard with corner castings. They allow for stacking; lifting with a crane; and take in the burden of the container.   Based the on producer, you may be able to locate a New or Used 40ft container with forklift pockets a result of the https://juliusbxrjc.scrappingwiki.com/700689/40ft_high_cube_open_side_container_for_sale_can_be_fun_for_anyone