What are the dimensions of the mattress & box springs?
Like all other bedding manufacturers, Simmons subscribes to the International Sleep Products Association standard for bedding products. Dimension sizes are allowed ± ½” tolerance. If a “bunkie” foundation is used, it shall have the same width, length and tolerances as the finished twin size box spring. Finished sizes are measured from seam to seam on the binding tape at the centerlines of the width and length.