Brand: Mainstays Size & Weight: Twin bed frame size: 75x39x14", Maximum load capacity: 350Lbs. Stable without shaking and squeaking Durable Construction: Made from heavy-duty steel for long-lasting support and durability. Classic Design: Features a black steel finish that complements any bedroom decor. included.No Box Spring Needed: Designed to be used with just a mattress, eliminating the need for a box spring. Storage Space: 12.5-inch under-bed storage. Everything you need is efficiently packed into one box and shipped straight to your door