Ladder rungs/steps can be used in several applications, such as adding them to pull boxes. These steps are simple to field install. Just pre-drill 1 inch diameter holes wherever you need the rungs, and then drive them in with a hammer until it is firmly seated in the pull box wall. The rungs are constructed of a copolymer polypropylene exterior with a 1/2″ diameter Grade 60 steel reinforcement bar in the center.
Order part number Click here for specs. These are great for applications that require frequent submersion. Both versions meet ASTM-C478.