The Stablesupport King Split Low Profile Foundation offers a sturdy 5-inch height, combining two Twin XL foundations to create a standard King-size base. Designed with high-quality textiles and durable materials, it provides a solid foundation that helps prevent sagging and bowing, ensuring long-lasting mattress support. Assembled in the USA and backed by a 10-year limited warranty, the Stablesupport King Split Low Profile Foundation delivers dependable performance and peace of mind.