---
product_id: 648832299
title: "9 Inch Twin WonderBox(TM) Smart Box Spring, Quick Assembly Mattress Foundation, Durable Metal Frame, Grey"
brand: "zinus"
price: "₹ 123109"
currency: INR
in_stock: true
reviews_count: 13
category: "Zinus"
url: https://www.desertcart.in/products/648832299-9-inch-twin-wonderbox-tm-smart-box-spring-quick-assembly
store_origin: IN
region: India
---

# Tool-free snap assembly in minutes 9-inch customizable height for perfect mattress support Durable steel frame with 5-year warranty 9 Inch Twin WonderBox(TM) Smart Box Spring, Quick Assembly Mattress Foundation, Durable Metal Frame, Grey

**Brand:** zinus
**Price:** ₹ 123109
**Availability:** ✅ In Stock

## Summary

> 🛠️ Snap, Support, Sleep: The Smart Foundation for Next-Level Zzz’s

## Quick Answers

- **What is this?** 9 Inch Twin WonderBox(TM) Smart Box Spring, Quick Assembly Mattress Foundation, Durable Metal Frame, Grey by zinus
- **How much does it cost?** ₹ 123109 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.in](https://www.desertcart.in/products/648832299-9-inch-twin-wonderbox-tm-smart-box-spring-quick-assembly)

## 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

- • **Rock-Solid Steel Support:** Heavy-duty alloy steel frame ensures mattress longevity and stability.
- • **Silent Nights Guaranteed:** Squeak-resistant design means zero noise disruptions—sleep like royalty.
- • **Tailored Comfort Heights:** Choose between 5 or 9 inches to perfectly elevate your sleep sanctuary.
- • **Eco-Friendly Compact Delivery:** Compact WonderBox packaging makes delivery and setup a breeze while reducing waste.
- • **Effortless Setup, Zero Hassle:** Tool-free design snaps together in minutes—no tools, no stress.

## Overview

The 9 Inch Twin WonderBox™ Smart Box Spring by Zinus combines a durable alloy steel frame with a tool-free, quick assembly design. Its customizable height options (5 or 9 inches) provide tailored mattress support, while the squeak-resistant construction ensures silent, stable sleep. Delivered in eco-friendly compact packaging and backed by a 5-year warranty, it’s engineered for millennials who value convenience, sustainability, and lasting comfort.

## 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: Best Purchase Ever - I never write product reviews, but this was such an awesome purchase. This is the BEST box spring I have ever owned. If you’re on the fence about buying this product, or you’re trying to decide between options, here’s a number of reasons to go with this one. 1. Noise Level: NONE. Completely silent. This was my #1 reason for wanting a new box spring in the first place, and it does not disappoint. Our previous box spring (the traditional wood/spring kind) had become squeaky over the years, and kept waking up our 5 month old baby. This new box spring hasn’t made one tiny noise since day one - our baby has been sleeping through the night. Relief is an understatement. 2. Sturdiness: I have never felt so supported by my bed. It feels even better than when our previous box spring was brand new, so I know it’s not just because it’s new. I have chronic shoulder pain, and while a new box spring obviously isn’t a cure, I have been waking up significantly less sore for the first time in years. My husband doesn’t have the same pain issues, but he agrees that our bed feels much more sturdy and comfortable, because our bodies are better supported. 3. Assembly: So easy. I am not in my greatest shape (I did just have a baby), but I was able to put it together without my husband’s help. The box comes with some screws and an Alan key, and that’s honestly all that’s needed. The directions are pretty easy to follow. I will say that the “Up” stickers were placed on the parts in a way that was a little confusing at times, but if you pay close attention to the pictures in the instructions, you’ll be fine. It took me less than an hour. I cannot recommend this box spring enough. Do yourselves a favor and purchase this. You can thank me later. :)

## 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D2VMS5TM |
| Assembly Instructions Description | Included |
| Best Sellers Rank | #38,841 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #26 in Box Springs |
| Brand Name | Zinus |
| Color | Grey |
| Compatible With Mattress Size | Twin |
| Customer Reviews | 3.9 3.9 out of 5 stars (1,500) |
| Finish Types | Unfinished |
| Form Factor | Standard Box Spring |
| Furniture Finish | Gray |
| Global Trade Identification Number | 00841550372694 |
| Included Components | Box Spring, Installation Manual |
| Item Depth | 73.8 inches |
| Item Dimensions | 73.8 x 37.9 x 9 inches |
| Item Dimensions L x W x H | 73.8"L x 37.9"W x 9"H |
| Item Type Name | Quick Assembly Mattress Foundation, Durable Metal Frame |
| Item Weight | 9.22 Kilograms |
| Manufacturer | Zinus |
| Manufacturer Part Number | ZU-FBSSG1OC-09T |
| Material Type | Alloy Steel |
| Maximum Weight Recommendation | 350 Pounds |
| Model Number | ZU-FBSSG1OC-09T |
| Other Special Features of the Product | Easy assembly, Squeak Resistant |
| Required Assembly | Yes |
| Shape | Rectangular |
| Size | Twin |
| Style Name | 9 inch |
| UPC | 841550372694 |

## Product Details

- **Material:** Alloy Steel
- **Product Dimensions:** 73.8"L x 37.9"W x 9"H
- **Size:** Twin
- **Special Feature:** Easy assembly, Squeak Resistant
- **Style:** 9 inch

## Images

![9 Inch Twin WonderBox(TM) Smart Box Spring, Quick Assembly Mattress Foundation, Durable Metal Frame, Grey - Image 1](https://m.media-amazon.com/images/I/61vyLl9KXCL.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.

### ⭐⭐⭐⭐⭐ Best Purchase Ever
*by C***2 on February 11, 2025*

I never write product reviews, but this was such an awesome purchase. This is the BEST box spring I have ever owned. If you’re on the fence about buying this product, or you’re trying to decide between options, here’s a number of reasons to go with this one. 1. Noise Level: NONE. Completely silent. This was my #1 reason for wanting a new box spring in the first place, and it does not disappoint. Our previous box spring (the traditional wood/spring kind) had become squeaky over the years, and kept waking up our 5 month old baby. This new box spring hasn’t made one tiny noise since day one - our baby has been sleeping through the night. Relief is an understatement. 2. Sturdiness: I have never felt so supported by my bed. It feels even better than when our previous box spring was brand new, so I know it’s not just because it’s new. I have chronic shoulder pain, and while a new box spring obviously isn’t a cure, I have been waking up significantly less sore for the first time in years. My husband doesn’t have the same pain issues, but he agrees that our bed feels much more sturdy and comfortable, because our bodies are better supported. 3. Assembly: So easy. I am not in my greatest shape (I did just have a baby), but I was able to put it together without my husband’s help. The box comes with some screws and an Alan key, and that’s honestly all that’s needed. The directions are pretty easy to follow. I will say that the “Up” stickers were placed on the parts in a way that was a little confusing at times, but if you pay close attention to the pictures in the instructions, you’ll be fine. It took me less than an hour. I cannot recommend this box spring enough. Do yourselves a favor and purchase this. You can thank me later. :)

### ⭐ Don’t buy - too creaky
*by L***N on March 20, 2026*

Easy to assemble but it is so creaky! I tried tightening it every time it would creak again but the logistics behind that are just a pain in the butt. Investing in the foundation from the place I purchased my mattress instead. My friend recommended this to me and she has no issues with noise so maybe I got a defect?

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*Product available on Desertcart India*
*Store origin: IN*
*Last updated: 2026-07-14*