---
product_id: 649129617
title: "Zinus 9 Inch Queen WonderBox(TM) Smart Box Spring, Quick Assembly Mattress Foundation, Durable Metal Frame, Grey"
price: "₩601923"
currency: KRW
in_stock: true
reviews_count: 8
url: https://www.desertcart.kr/products/649129617-zinus-9-inch-queen-wonderbox-tm-smart-box-spring-quick
store_origin: KR
region: South Korea
---

# Compact eco-friendly packaging Tool-free snap assembly Dual height customizable support Zinus 9 Inch Queen WonderBox(TM) Smart Box Spring, Quick Assembly Mattress Foundation, Durable Metal Frame, Grey

**Price:** ₩601923
**Availability:** ✅ In Stock

## Summary

> 🛠️ Snap, Support, Sleep: The Smart Foundation for Modern Living

## Quick Answers

- **What is this?** Zinus 9 Inch Queen WonderBox(TM) Smart Box Spring, Quick Assembly Mattress Foundation, Durable Metal Frame, Grey
- **How much does it cost?** ₩601923 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/649129617-zinus-9-inch-queen-wonderbox-tm-smart-box-spring-quick)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Sleep with Confidence:** Backed by a 5-year warranty for peace of mind that lasts.
- • **Custom Comfort Heights:** Choose between 5 or 9 inches to perfectly tailor your sleep sanctuary.
- • **Steel-Strong Durability:** Robust alloy steel frame ensures long-lasting mattress support and zero squeaks.
- • **Eco-Smart Compact Delivery:** Arrives in a surprisingly small, earth-friendly box that fits through any doorway.
- • **Effortless Setup in Minutes:** Tool-free design snaps together quickly—no sweat, no tools, no hassle.

## Overview

The Zinus 9 Inch Queen WonderBox™ Smart Box Spring combines durable alloy steel construction with a tool-free, quick assembly design. Delivered in compact, eco-friendly packaging, it offers customizable height options (5 or 9 inches) to optimize mattress support and comfort. Engineered for stability and silence, it comes with a 5-year warranty, making it the smart choice for millennials seeking hassle-free, sustainable bedroom upgrades.

## Description

As the backbone for solid mattress support, a box spring that falls short can make or break your night’s sleep. We developed the Smart BoxSpring® with unbeatable durability and rock-solid stability to keep your mattress in shape for years to come. And our latest quick assembly version gives you total confidence when it comes to setup, requiring fewer bolts and ingeniously designed with easy to use, tool-free brackets. With our simple, step-by-step instructions on hand, you’ll have this foundation built and ready to use within minutes. Built with a strong and durable steel frame and a versatile poly jacquard cover that slips right on, the Smart BoxSpring® is the picture of dependability for any mattress. 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

- EASY DELIVERY & A CLEANER PLANET – Delivered in our earth-friendly WonderBox that is surprisingly small and easy to maneuver through doorways and tight corners
- EFFORTLESS ASSEMBLY: Tool-free design snaps together in minutes for a frustration-free setup
- CUSTOMIZABLE COMFORT: Choose from two heights to create your perfect sleep oasis – 5 inches for a lower profile, or 9 inches for an extra boost
- DURABLE STEEL CONSTRUCTION: Provides long-lasting support for your mattress, maximizing comfort and lifespan
- WORRY-FREE WARRANTY – Sleep soundly with an included 5-year warranty. Box spring only, a bed frame or platform bed is required to support this foundation and is sold separately

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Color | Grey |
| Material | Alloy Steel |
| Product Dimensions | 78.7"L x 59.5"W x 9"H |
| Size | Queen |
| Special Feature | Compact Packaging, Tool-free, Easy Assembly |
| Style | 9 inch |

## Product Details

- **Size:** Queen
- **Material:** Alloy Steel
- **Product Dimensions:** 78.7"L x 59.5"W x 9"H
- **Style:** 9 inch
- **Special Feature:** Compact Packaging, Tool-free, Easy Assembly

## Images

![Zinus 9 Inch Queen WonderBox(TM) Smart Box Spring, Quick Assembly Mattress Foundation, Durable Metal Frame, Grey - Image 1](https://m.media-amazon.com/images/I/61+S5Yx-sIL.jpg)
![Zinus 9 Inch Queen WonderBox(TM) Smart Box Spring, Quick Assembly Mattress Foundation, Durable Metal Frame, Grey - Image 2](https://m.media-amazon.com/images/I/71OTKudUlAL.jpg)
![Zinus 9 Inch Queen WonderBox(TM) Smart Box Spring, Quick Assembly Mattress Foundation, Durable Metal Frame, Grey - Image 3](https://m.media-amazon.com/images/I/71r54UF-PIL.jpg)
![Zinus 9 Inch Queen WonderBox(TM) Smart Box Spring, Quick Assembly Mattress Foundation, Durable Metal Frame, Grey - Image 4](https://m.media-amazon.com/images/I/71roW+gyrHL.jpg)
![Zinus 9 Inch Queen WonderBox(TM) Smart Box Spring, Quick Assembly Mattress Foundation, Durable Metal Frame, Grey - Image 5](https://m.media-amazon.com/images/I/81AkJXzJFwL.jpg)

## Available Options

This product comes in different **Pattern, Size, Style** options.

## 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 South Korea*
*Store origin: KR*
*Last updated: 2026-02-11*