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Insta-Box Foldable Metal Mattress Foundation - California King

Prices as of September 26, 2026, as listed by each retailer — verify the current price on the retailer's site before purchase.

Price history tracked at Macy's price tracker

14-day low
$279.00
Sep 13 · Macy's
Best price
$279.00
−0% vs high
14-day high
$279.00
All stores
$279$279$279
Sep 13Sep 26
  • Macy's
Lowest in 14 days: $279.00 at Macy's. Highest: $279.00. Current best is 0% below the 14-day high.

About this product

The Primo International Insta-Box Foldable Metal Mattress Foundation is a durable, all-metal bed base designed for California King-sized mattresses. It features a foldable structure that enables quick setup, compact storage, and easy portability. The foundation includes a removable non-slip grey linen cover for simple cleaning and added comfort. Its sturdy frame supports most mattress types and fits standard bed frames, making it ideal for guest rooms or small spaces. No tools are required for assembly, and the product ships in a compact box for straightforward delivery.

  • Folds in half for storage
  • California King size
  • Metal frame with linen cover
  • No tools needed for assembly
  • Removable non-slip cover
  • 50 lbs weight

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Insta-Box Foldable Metal Mattress Foundation — Price History