The Shepherd Hardware 5-1/4-Inch black bed riser 4-pack adds extra storage space underneath your bed by using the Shepherd 6 in. Bed Risers. These rectangular, plastic risers fit most posts or casters that are up to 2-3/4 in. in diameter. These risers can lift your bed up to 5-1/4 in. off the floor. 6" black molded plastic bed riser set - 4 Pack Bed risers nest casters or bed posts up to 3" in diameter and elevate the bed an extra 5-1/4" to create extra storage space, allow for easier cleaning or for easier in-and-out. Impervious to insects and water with a 300lb load capacity each, risers have countless uses indoors and outside. Stacking design for storage when not in use.