---
product_id: 41288107
title: "7 Inch Metal Smart Box Spring / 700 lbs Mattress Foundation / Strong Metal Frame / Easy Assembly, King"
brand: "zinus"
price: "284800 Ft"
currency: HUF
in_stock: true
reviews_count: 9
category: "Zinus"
url: https://www.desertcart.hu/products/41288107-7-inch-metal-smart-box-spring-700-lbs-mattress-foundation
store_origin: HU
region: Hungary
---

# steel frame durability 700 lbs support 7-min assembly 7 Inch Metal Smart Box Spring / 700 lbs Mattress Foundation / Strong Metal Frame / Easy Assembly, King

**Brand:** zinus
**Price:** 284800 Ft
**Availability:** ✅ In Stock

## Summary

> 🛏️ Sleep Strong, Assemble Fast, Live Elevated!

## Quick Answers

- **What is this?** 7 Inch Metal Smart Box Spring / 700 lbs Mattress Foundation / Strong Metal Frame / Easy Assembly, King by zinus
- **How much does it cost?** 284800 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/41288107-7-inch-metal-smart-box-spring-700-lbs-mattress-foundation)

## Best For

- zinus enthusiasts

## Why This Product

- Trusted zinus brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Setup:** Assemble your king-size foundation in under 7 minutes with included tools and clear instructions.
- • **Quiet Confidence:** Engineered to eliminate squeaks and shifts, so your sleep stays uninterrupted and peaceful.
- • **Sleek Steel Design:** Durable alloy steel frame wrapped in a modern poly jacquard cover for a clean, contemporary look.
- • **Unmatched Strength:** Supports up to 700 lbs, ensuring a stable and sturdy base for your mattress and restful nights.
- • **Compact & Convenient:** Ships in a single box with all parts neatly organized for easy transport and hassle-free assembly.

## Overview

The ZINUS 7 Inch Metal Smart Box Spring is a king-size mattress foundation built with a robust steel frame supporting up to 700 lbs. Designed for quick assembly in under 7 minutes, it features a sleek poly jacquard cover and a noise-free structure that enhances mattress longevity and sleep quality. Backed by a 5-year warranty, it combines durability, style, and convenience for the modern bedroom.

## Description

We like to think of a box spring as the backbone for your mattress. The best kind should be flat, level and built to keep your mattress in tiptop shape; and that’s just what the Smart Box Spring does! With its easily assembled, dependable steel structure, you can rest assured that your mattress will be sitting pretty. An included poly jacquard cover blends with the rest of your bedroom, and with a variety of different thicknesses to choose from, you can pick the one you need to customize the height of the bed. All packed in a compact shipping box with everything included, even our 5-year worry free warranty! Now that’s peace of mind you can sleep on.

Review: Very sturdy and surprisingly quiet - I’m honestly impressed with this foundation. I bought the king size and was expecting it to be heavy and complicated, but it was actually very easy to put together. The frame feels solid once it’s assembled, and it doesn’t wobble or shift when you get in and out of bed. What I like the most is that it makes absolutely no noise. No squeaks, no movement sounds at all. The support is firm in a good way, and the surface feels steady under the mattress. It also doesn’t weigh as much as I expected, so moving it around wasn’t a problem. Overall, it looks clean, feels durable, and holds the mattress perfectly without sliding. The height is perfect to match the regular bed headboard. (4 " works )Great buy.
Review: Strong and yet affordable - Had never heard of a box spring that is not made from wood. At first, I was skeptical to order a box spring from steel. My skepticism then got slightly worse when I read some negative reviews about "OHM, it takes too long to assemble!" Being an engineer and an optimist upon reading majority of great reviews, I went ahead and placed an order for queen box spring. Not only it arrived in time but it was also well-packed. It is heavy and you will need 2 people to carry the box from outside to your bedroom. Once I unopened the box, I was surprised to find the individual pieces tied up in groups based where they all go. Every single piece is numbered and lettered. A piece numbered "1" connects to another piece numbered "1", numbered "2" connects with another numbered "2". Very simple and easy. The kit also comes with tools. The part breakdown is as per below: A (inner long rail) = 2 B (inner short rail) = 1 C (outer short rail) = 2 D (outer long rail-1) = 2 E (outer long rail-2) = 2 F (Slats) = 10 S (shortest screws) = 8 M (mid-length screws) = 4 L (long screws) = 2 H (nuts) = 10 The best advice is that open the box, remove the cable ties, lay out all parts on floor as per the intended connection and get an idea of who connects to who (without actually assembling). It is otherwise called a "raw" or a "draft" assembly". Once it is done, it takes 30 minutes MAX to connect all components. I then put the cover on it and zipped it up. Voila, it was now ready to be placed on the bed. The moment of truth was moments away. My daughter and I lifted it up and placed it on her queen bed. It fit perfectly. We then put the mattress and lied down on it. It is very sturdy and does not squeak upon rolling. Overall, it is very strong and affordable. Here is the best part. It can be unassembled and moved to another place much easily (than the traditional wood box spring). I highly recommend it. Buy it with full confidence!

## Features

- Steel interior frame with knitted polyester cover
- THE LAST BOX SPRING YOU’LL EVER NEED - Unlike a traditional box spring, the Smart BoxSpring is made of solid steel that comes together in no time and is backed by our Zinus “Peace of Mind” 5 year warranty
- DURABLY ENGINEERED - Durable steel is used to construct the inside framework of this foundation; twin size supports a maximum weight capacity of 350 lbs, while all other sizes can support up to 700 lbs
- THOUGHTFULLY PACKAGED - All parts, tools and instructions are packed into one compact box that ships straight to your door
- Box spring only, a bed frame or platform bed is required to support this foundation and is sold separately
- Worry-free 5 year limited warranty included. King: 79" X 76" X 7", weight 43.98 lb

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01NANZ5JB |
| Assembly Instructions Description | Assembly instructions included |
| Assembly Required | Yes |
| Best Sellers Rank | #16,001 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #11 in Box Springs |
| Brand | Zinus |
| Color | White |
| Compatible With Mattress Size | King |
| Customer Reviews | 4.3 4.3 out of 5 stars (16,029) |
| Date First Available | December 29, 2016 |
| Finish Type | Steel |
| Form Factor | Metal box spring with a 7-inch height |
| Furniture Finish | Alloy Steel |
| Global Trade Identification Number | 00841550100136 |
| Ground To Item Distance | 7 Inches |
| Headboard Material | Steel |
| Included Components | Foundation, Cover |
| Is Discontinued By Manufacturer | No |
| Item Weight | 47 pounds |
| Item model number | OLB-ABS-7K |
| Manufacturer | Zinus |
| Product Care Instructions | Wipe with Dry Cloth |
| Product Dimensions | 79"L x 76"W x 7"H |
| Size | King |
| Special Feature | Durable |
| UPC | 841550100136 |

## Product Details

- **Material:** Alloy Steel, Fabric
- **Product Dimensions:** 79"L x 76"W x 7"H
- **Size:** King
- **Special Feature:** Durable
- **Style:** 7 inch

## Images

![7 Inch Metal Smart Box Spring / 700 lbs Mattress Foundation / Strong Metal Frame / Easy Assembly, King - Image 1](https://m.media-amazon.com/images/I/81ArKY6Nk0L.jpg)

## Questions & Answers

**Q: Are any tools required to assemble my box spring?**
A: This box spring is shipped with everything you need to assemble it - all parts, tools and instructions can be found efficiently packed in the shipping box.

**Q: Does this box spring require a bed frame?**
A: A basic metal bed frame or platform bed is required to support this box spring. Add your mattress, and you've got the dynamic trio for rock solid support.

**Q: What kind of mattress can this box spring support?**
A: Our box springs are designed to do it all! Rest your memory foam, latex or spring mattress on top for smooth snoozing.

**Q: What is the distance between slats?**
A: For Twin and Full sizes, spacing is 6.3 inches. For Twin XL, Queen and King sizes, spacing is 6.7 inches. For California King size, spacing is 7.2 inches.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very sturdy and surprisingly quiet
*by A***3 on November 19, 2025*

I’m honestly impressed with this foundation. I bought the king size and was expecting it to be heavy and complicated, but it was actually very easy to put together. The frame feels solid once it’s assembled, and it doesn’t wobble or shift when you get in and out of bed. What I like the most is that it makes absolutely no noise. No squeaks, no movement sounds at all. The support is firm in a good way, and the surface feels steady under the mattress. It also doesn’t weigh as much as I expected, so moving it around wasn’t a problem. Overall, it looks clean, feels durable, and holds the mattress perfectly without sliding. The height is perfect to match the regular bed headboard. (4 " works )Great buy.

### ⭐⭐⭐⭐⭐ Strong and yet affordable
*by V***Y on February 24, 2020*

Had never heard of a box spring that is not made from wood. At first, I was skeptical to order a box spring from steel. My skepticism then got slightly worse when I read some negative reviews about "OHM, it takes too long to assemble!" Being an engineer and an optimist upon reading majority of great reviews, I went ahead and placed an order for queen box spring. Not only it arrived in time but it was also well-packed. It is heavy and you will need 2 people to carry the box from outside to your bedroom. Once I unopened the box, I was surprised to find the individual pieces tied up in groups based where they all go. Every single piece is numbered and lettered. A piece numbered "1" connects to another piece numbered "1", numbered "2" connects with another numbered "2". Very simple and easy. The kit also comes with tools. The part breakdown is as per below: A (inner long rail) = 2 B (inner short rail) = 1 C (outer short rail) = 2 D (outer long rail-1) = 2 E (outer long rail-2) = 2 F (Slats) = 10 S (shortest screws) = 8 M (mid-length screws) = 4 L (long screws) = 2 H (nuts) = 10 The best advice is that open the box, remove the cable ties, lay out all parts on floor as per the intended connection and get an idea of who connects to who (without actually assembling). It is otherwise called a "raw" or a "draft" assembly". Once it is done, it takes 30 minutes MAX to connect all components. I then put the cover on it and zipped it up. Voila, it was now ready to be placed on the bed. The moment of truth was moments away. My daughter and I lifted it up and placed it on her queen bed. It fit perfectly. We then put the mattress and lied down on it. It is very sturdy and does not squeak upon rolling. Overall, it is very strong and affordable. Here is the best part. It can be unassembled and moved to another place much easily (than the traditional wood box spring). I highly recommend it. Buy it with full confidence!

### ⭐⭐⭐⭐⭐ Effortless Assembly and Rock-Solid Support – A Huge Improvement Over Older Models
*by M***I on July 20, 2025*

I’m really impressed with how far assemble-at-home box springs have come. I bought this California King size box spring and couldn’t be happier with the experience. Setup was incredibly easy—everything fit together perfectly, and I had it fully assembled in under 30 minutes without any frustration. It feels solid and well-built, offering great support for the mattress. The last time I assembled a box spring at home was back in 2018, and that one was a struggle from start to finish. This one was the complete opposite—quick, intuitive, and sturdy. Highly recommend if you're looking for a hassle-free option that doesn't compromise on quality.

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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-02-01*