King Open Box Box Springs & Foundations

Are you troubled by mattress sagging affecting your sleep? Are you bothered by a bed frame that's too low? You need a metal mattress base. This heavy-duty mattress base features spacing between slats to effectively prevent mattress sagging. Standing tall, it's constructed from sturdy steel for enhanced stability and durability, ensuring long-lasting performance. All models come with a neutral-toned cover and feature non-slip elastic straps for easy assembly and disassembly.

Took me 25-35 minutes to put together but works perfectly! I have an old bed-frame from the 70s and needed something steady to put at the bottom. Cheap, easy, and sturdy!. Anonymous. Thu Oct 08 2026

This box spring offers support, durability, and reduced motion. When used with a proper supportive bed frame, it helps prevent sagging and bowing for the life of the mattress.

Great quality! Sleek design. Dironda. Mckinney, TX. Mon Apr 13 2026

Bunkie Board, King Size 76.8 x 70.1 in, Foldable Bed Board Under Mattress with Nylon Webbing, Plywood, Rounded Edges, Anti-Sag Design for Metal Frames, Sleeper Sofas, Platform and Bunk Beds

Works great on our vintage king size bed frame.. Betty. US. Sat Sep 26 2026

Utilizing the less-is-more motto, the Upholstered Platform Bed anchors your room in effortless sophistication. A fresh take on a panel-style bed, the low profile, clean lines, and rounded corners of the upholstered headboard lend a modern feel to the look. Adding soft texture to your bedroom design, the headboard, side rails, and foot rail all feature high-density foam padded upholstery. Not only is the upholstery classic feel, but it is also water and stain-resistant, making it an excellent choice for daily living. Timeless, tailored, yet approachable, the Upholstered Platform Bed can transition through bedding changes, wall color swaps, and total aesthetic transformations.