【PRACTICAL & DURABLE】9" twin box spring, sturdy steel internal frame provides a stable support platform for the mattress. No squeaks. Ensure your excellent sleep quality every night. 【QUICK & EASY ASSEMBLY】Integrated structure design, easy to assemble. All parts of the box spring twin, assembly tools and instructions are included in the package. 【EASY TO CLEAN】High quality fabric cover, easy to removable for spot cleaning. 【HIHG PROFILE DESIGN】9 inch height is perfect for shorter mattresses or for people who prefer their bed to be higher off the floor. 【Worry-free Warranty 】RLDVAY Twin size box spring only, bed frame or platform bed is required to support this box spring and is sold separately. RLDVAY Twin-Box-Spring, 9 inch Metal Twin-Size Box-Spring Only, Heavy Duty Box Spring Twin with Fabric Cover, Easy Assembly, Non Slip, Noise Free