1. Introduction
The ZINUS 7 Inch Metal Smart Box Spring is engineered to provide a flat, level, and dependable foundation for your mattress, ensuring its longevity and optimal performance. Its robust steel structure is designed for easy assembly and comes with a poly jacquard cover for a seamless blend with your bedroom decor. This manual will guide you through the setup, use, and care of your new box spring.
2. Safety Information
Please read and follow all safety instructions carefully to prevent injury or damage to the product.
- Exercise caution around sharp edges during assembly.
- Do not exceed the maximum weight capacity: 350 lbs for Twin size, and 700 lbs for all other sizes (including King). Exceeding this limit may lead to instability or damage.
- Always follow the assembly instructions precisely to ensure the stability and safety of the foundation.
- This box spring requires a separate bed frame or platform bed for support. It is not designed to be a standalone bed frame.
3. Included Components
Your ZINUS Smart Box Spring package includes the following:
- Metal Foundation Frame Components
- Poly Jacquard Cover
- All necessary tools and hardware for assembly

Image: All components included in the ZINUS Smart Box Spring package.
4. Setup and Assembly
The ZINUS Smart Box Spring is designed for easy, tool-free assembly. All parts, tools, and instructions are conveniently packed in one compact box.
- Unpack Components: Carefully remove all parts from the packaging. Verify that all components listed in Section 3 are present.
- Assemble the Metal Frame: Follow the included step-by-step instructions to connect the metal frame pieces. The design features a sturdy steel structure with intuitive connections.
- Secure Connections: Ensure all connections are firmly secured. The frame is engineered for durability and stability.
- Apply the Cover: Once the metal frame is fully assembled, stretch the poly jacquard cover over the frame. The elastic band design makes it easy to put on and take off.

Image: Step-by-step visual guide for assembling the box spring frame and applying the cover.

Image: Detail of the elastic band cover for easy application.

Image: Details highlighting the sturdy design and connection mechanisms.
5. Operating
Once assembled, place the ZINUS Smart Box Spring onto your existing bed frame or platform bed. The box spring provides a solid, even surface for your mattress, enhancing its support and comfort. Its non-slip fabric helps keep your mattress securely in place.

Image: Placing a mattress onto the assembled box spring.

Image: The ZINUS Smart Box Spring fully assembled and ready for use.
6. Maintenance
To maintain your ZINUS Smart Box Spring, simply wipe the metal frame with a dry cloth as needed. The poly jacquard cover can be removed for cleaning according to its care label instructions, typically spot cleaning or gentle machine wash.
7. Troubleshooting
- Squeaking Noises: If you experience squeaking, ensure all frame connections are tightened. Over time, connections may loosen slightly. Re-tightening screws can often resolve this.
- Instability: If the box spring feels unstable, double-check that it is placed on a flat, sturdy bed frame or platform. Also, confirm that all assembly steps were followed correctly and all parts are securely connected.
- Cover Fit: If the cover does not fit properly, ensure it is oriented correctly and stretched evenly over the frame. The elastic band is designed for a snug fit.
8. Specifications
| Feature | Detail |
|---|---|
| Size | King |
| Product Dimensions | 79"L x 76"W x 7"H |
| Special Feature | Durable |
| Color | Grey |
| Finish Type | Steel |
| Included Components | Foundation, Cover |
| Compatible With Mattress Size | King |
| Item Weight | 47 pounds |
| Assembly Required | Yes |
| Ground To Item Distance | 7 Inches |

Image: Product dimensions and weight capacity.
9. Warranty and Support
Your ZINUS 7 Inch Metal Smart Box Spring comes with a 5-year worry-free limited warranty. For detailed warranty information or support, please refer to the documentation included with your product or visit the official ZINUS website.
You can also download the full installation manual in PDF format here: Installation Manual (PDF)







