2026 NEW Mainstays 7.5″ Half-Fold Metal Box Spring, King

Durably support your mattress with the superior design and construction of Mainstays Fold-in-Half Metal Box Spring in King, Black. This Heavy Duty box spring boasts heavy-gauge premium steel bars throughout to provide comfortable, trusted support for your mattress. Easily folds away into a flat, compact size, ideal for easy storage and transport no matter where you go. The included coverlet fits onto the box spring and zips on for a secure fit and effortless cleaning when required and never fuss with your mattress moving out of place with the coverlet’s non-slip surface. Mainstays 7.5″ Half-Fold Metal Box Spring in Black Steel offers a modern and more durable solution to conventional wood box springs, providing a naturally sanitary structure that is mold and even bed bug resistant. Ultra easy to set up in your home, this Fold-in-Half Metal Box Spring from Mainstays requires zero assembly – just unfold, zip on the cover and you’re ready to use, ideal for use in any room from bedrooms to dorms or guest rooms and is sure to provide you with a durable, clean, and supported sleeping environment.

• • Product dimensions: King: 79″L x 76″W x 7.5″H
  • Weights 56.79 lbs.
  • Can support up to 1200 lbs.
  • Constructed from premium high gauge steel, plastic, and polyester that can stand up to everyday wear and tear
  • Naturally bed bug and mold resistant
  • Provides ultra sturdy support for any mattress
  • Classic black steel finish
• • Includes a no-slip fabric coverlet that zips on
  • Folds in half and flattens for easy storage and transportation
• • Ideal for a child, teen, master bedroom and guest bedroom, or keep it hidden away until you need an extra space to sleep