Richards Homewares 5980-4 Wood Bed Lifters, Set of 4 (Mahogany) Universal Design To Fit Several Different Bed Styles. Compatible with Square Or Round Bed Posts And Even Casters (2.75" Wide) Heavy Duty Bed Risers raise your bed 2.75" Easily stackable to give you 6" of underbed storage Stacking design keeps smooth look Can be used to raise sofas/furniture as well Dimensions 4.5" x 4.5" x 3.875"