If your current ladder does not come with the a Pole Grip and Cable Hook, or you're looking for a replacement, the PK-E03A is the kit you'll want to install. Per OSHA, when portable ladders are used for access to an upper landing surface, the ladder side rails shall extend at least 3 feet (.9 m) above the upper landing surface to which the ladder is used to gain access; or when, such an extension is not possible because of the ladder's length, then the ladder shall be secured at its top to a rigid support that will not deflect, and a grasping device, such as a grab rail, shall be provided to assist employees in mounting and dismounting the ladder.