The Beautyrest Silver BRS900 Queen Box Spring Foundation by Simmons is a flat bed foundation designed to pair seamlessly with Beautyrest mattresses. Built with a spruce framework and welded steel elements, it delivers long-lasting support and durability for a reliable sleep surface.

This low-profile foundation stands approximately 5.5 inches tall, making it an excellent choice for platform frames or traditional bed bases. The queen size measures 79"L x 59.5"W x 5.5"H, with a center support leg that extends to the floor for added stability. It meets or exceeds State and Federal Fire Retardancy Standards when used with an approved Beautyrest mattress.

The foundation is designed for flat, non-adjustable bed frames and is not compatible with adjustable bases. It is covered by a 10-year warranty.