BeautySleep Low Profile Box Spring - Twin Size A beginner Includes five Year Limited Warranty, Sleep in comfort with our Simmons BeautySleep Low Profile Box Spring Foundation 5.5 Inch Height that provides stable and strong guidance for all those Beautyrest mattresses. This traditional profile foundation aids in averting sagging simply bowing for the lifespan of the mattress when employed with a supportive bedframe. It's developed with high grade wood and also iron struts utilizing an exclusive core power beam to