4-Inch No-Assembly Folding Metal Box Spring Mattress Foundation

Redefine convenience with this 4-inch folding metal box spring mattress foundation — no tools, no assembly, no hassle. Simply remove from the box, unfold, and it instantly takes shape. Built with a thick, durable steel structure and a poly jacquard cover, this low profile foundation is designed for long-lasting performance and effortless setup. Available in Queen, Split King, Split California King, and Twin sizes.

Key Features

• No Assembly Required — Unfolds instantly out of the box into a fully formed box spring shape; no tools or hardware needed
• Folding Design — Compresses flat for easy transport, storage, and maneuvering through tight hallways and corners on moving day
• Thick Steel Construction — Sturdy steel fill structure provides the look of a traditional box spring with superior long-term durability
• 4-Inch Low Profile Height — Sleek, space-saving design ideal for modern bedrooms and low-clearance bed frames
• Firm Support — Tight top design with firm firmness rating for consistent, even mattress support
• Poly Jacquard Cover — Durable, finished fabric cover for a clean, traditional box spring appearance
• 350 lb Weight Capacity — Supports up to 350 lbs for reliable everyday use
• 5-Year Warranty — Backed by a worry-free 5-year warranty

Materials & Construction

Constructed with a thick steel internal structure and a 2-layer build for lasting durability and consistent mattress support. The poly jacquard fabric cover gives it the appearance of a traditional box spring while the folding steel frame makes it far more practical for modern living. Designed to outlast standard box springs and compatible with most standard bed frames.

Setup & Mobility

No assembly required. Simply slide the foundation out of the box and unfold — it opens immediately to the shape of a box spring. The folding design also makes it easy to move between rooms or transport during a move, fitting easily through narrow hallways and tight corners.

Ideal For

• Bedrooms requiring a low-profile, no-assembly mattress foundation
• Renters and frequent movers who need easy transport and setup
• Platform bed frames and modern bedroom setups
• Anyone seeking a durable, long-lasting alternative to traditional box springs

Product Dimensions (Twin Size)

Product Specifications