When shopping for a mattress, don’t forget the foundation or box spring. Well-built mattress foundations provide extra support and hold mattresses in place with their non-skid tops—essential for a supportive sleep. Boxspring sizes range from twin and full to king and California king. A split queen box spring or foundation consists of two foundations that support the mattress—two foundations are also used for king size beds. When it comes to height, a box spring mattress either has a low or standard profile. A low mattress box spring is perfect for those who do not like to sleep too high off the ground. The shorter height compensates for a thicker mattress height. Mattress foundations should have solid wood construction with diagonal bar, corner supports and impact–protected plastic edges. Go the extra mile for comfort and treat yourself to a power base. This holds an adjustable mattress, perfect for personalizing your sleep position. Find a wide selection of power bases in-store.