Enhancing Home's Premium Adjustable Bed Risers - Bed Lifts for Underbed Storage, Pack of 8 - Make Your Bed Adjustable Installed bed lifters create more room for storage under furniture. Box contains 8 adjustable bed risers. With 3 configurations for heightening furniture. Large bed risers add 5" to height, and small add 3", combined they add 8". Bed or furniture leg stays in place with .75" deep cup. Both large bed lift cups and small cup holds 2.6" x 2.6" sized furniture leg.