Zinus Quick Lock® 4" Metal Smart Box Spring®, Twin
Zinus Quick Lock® 4" Metal Smart Box Spring®, Twin
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Zinus Quick Lock® 4" Metal Smart Box Spring®, Twin

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Bed SizeTwin
Size4"

Key item features

  • Effortless Assembly: The Quick Lock Metal Smart Box Spring features an intuitive Quick Lock assembly system with fewer bolts, designed for quick and stress-free setup.
  • Durable Construction: Engineered with a substantial steel frame, this foundation supports a maximum weight capacity of 350 lbs for the twin size.
  • Low Profile: With a 4-inch height, this box spring is ideal for use with taller mattresses or for achieving a lower bed profile.
  • Compact Packaging: All necessary parts, tools, and instructions are conveniently packed into a single compact box for easy shipping and handling.
  • Mattress Compatibility: Designed with closely spaced slats, this box spring is suitable for supporting latex, memory foam, or spring mattresses.
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Current price is $117.00
Price when purchased online
  • Free shipping
  • Free 90-day returns
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About this item

Product details

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Customer ratings & reviews

4.7 out of 5 stars
stars
91 ratings45 reviews
How item rating is calculated
  1. 5 stars86% (78)
  2. 4 stars7% (6)
  3. 3 stars2% (2)
  4. 2 stars0% (0)
  5. 1 star5% (5)

Reviews summary

Pros

  • : Made with a construction that can withstand weight and use.
  • : Assembles quickly with minimal tools and effort.
  • : Offers great value at a lower cost.
  • : Pieces fit together accurately and snugly.
  • : Made with secure joints and durable materials.
  • : Directions are easy to follow.
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Showing 1-3 of 45 reviews

Feb 4, 2025
Pinkpony94
Item details
Bed size: Queen
Size: 4"
5 out of 5 stars review

Verified Purchase

This foundation exactly what I was looking for!!

My previous box spring foundation was 9” deep and with my deep mattress it was getting hard to get into bed at night. I decided to get a less deep foundation. A local furniture store would sell a 4” deep one for $380 which I thought was way too high. So I checked Walmart and decided on this one. It was easy to assemble and very sturdy. The cost was less than half the cost of the furniture store one. Now it's much easier to slide into bed at night. I highly recommend this foundation.

Incentivized Review
Helpful?3TP3WC4Z2VO4738700996
Jan 17, 2025
DJsLaw
Item details
Bed size: Queen
Size: 4"
5 out of 5 stars review

Verified Purchase

Truly a Quality Product!

This box spring is amazing. As I have gotten older, I have found that our 4-poster bed , with a combination of 26" of traditional box spring and mattress, was just not cutting it. Add in a recent foot surgery, and getting in and out of bed had become almost impossible. First we removed the 11" box spring and placed a piece of 1/2" plywood in it's place. That worked, but it was very difficult to get our hands down next to the side boards to put the sheets on the bed. Finding this box spring was one of the best things that has ever happened to me! My adult daughter and her Dad put the box spring together in about 15-20 minutes with each one of them working on a specific side of the frame. It was easy to put together and is super sturdy. All the pieces fit perfectly, and there were actually "extra" parts in the packing. This will last us for a very long time, for which we are thrilled! I would give this product 10 Stars if I could. I highly recommend this box spring!

Incentivized Review
Helpful?3TP3WC4Z2VO4738700996
Mar 2, 2026
Virginia
Top Reviewer
Item details
Bed size: Full
Size: 4"
5 out of 5 stars review

Verified Purchase

Reviews about quality were very helpful. I needed delivery asap and something I could afford. This box spring fit the bill.

Incentivized Review
Helpful?3TP3WC4Z2VO4738700996