The Zinus Keenan 14 inch Standing Smart Box Spring, Twin, provides sturdy support for the mattress of your choosing. Compact packaging allows for navigating tight interior spaces, such as stairs and hallways, when moving it to your bedroom for unpacking. This 14" box spring also includes all the necessary tools to make assembly simple. With leg supports and even headboard brackets also included, no additional frame is required. The metal inner structure creates a strong and reliable support system to keep your mattress level and balanced while you sleep. This Keenan Box Spring is available in a selection of sizes (each sold separately) to fit your space and requirements. Age Group: Adult, Universal