Standard box springs are 9 inches, while "low-profile" ones are 5 inches. Measure your current bed height to ensure your mattress doesn't end up too high.
Zinus WonderBox / Smart Box Spring (~$70–$110). It features a steel frame that snaps together without tools. Reviewers praise its silence and durability, though some note it can run slightly narrow for certain mattresses. buy cheap box spring
Buying a "cheap" box spring today often means choosing between a traditional coil foundation and a modern "smart" metal base. While you can find options for under $100, the "review" of this category is a mix of high value for some and long-term frustration for others. Standard box springs are 9 inches, while "low-profile"
Box Spring vs Platform Box: Shopping Advice - Bedrooms & More It features a steel frame that snaps together without tools
Many modern bed frames (platform beds) do not require a box spring at all, which could save you more money in the long run.
For most shoppers, , if you choose a modern metal "smart" box spring (like those from Zinus or Amazon Basics). These are generally more durable and quieter than cheap wood-and-wire versions. However, if you have a high-end memory foam or latex mattress, a "cheap" base with wide slat spacing can actually damage your mattress and void your warranty. Top-Rated Budget Picks (2026)
If your slats are more than 4 inches apart, your mattress may sag into the gaps. Look for "mattress foundations" with more slats if you have a heavy foam bed.