Introduction
The ZINUS Quick Lock Metal Smart Box Spring is designed to provide a sturdy and reliable foundation for your mattress. Featuring a robust steel frame and an innovative Quick Lock assembly system, this box spring offers enhanced support and simplifies the setup process. It is compatible with various mattress types, including latex, memory foam, and traditional spring mattresses.
This manual provides comprehensive instructions for the assembly, proper usage, and maintenance of your ZINUS Smart Box Spring to ensure long-lasting performance and comfort.
Setup
Unpacking
Your ZINUS Smart Box Spring is thoughtfully packaged in one compact box, containing all necessary parts, tools, and instructions. Carefully open the box and remove all components.
Components Overview

A view of the disassembled metal frame components, highlighting the sturdy steel structure before assembly.
Step-by-Step Assembly
- Prepare the Area: Clear a spacious area for assembly. It is recommended to have two people for easier setup, though one person can assemble it.
- Unfold the Frame: Carefully unfold the main metal frame sections.
- Connect Frame Sections: Utilize the Quick Lock system to connect the main frame sections. Insert bolts loosely at first to allow for slight adjustments. A small ratchet tool is included for convenience.
- Install Cross Bars: Insert the steel cross bars into their designated slots. Ensure the side with the thin foam layer is facing upwards to prevent metal-on-metal contact and reduce noise.
- Tighten All Bolts: Once all components are in place, securely tighten all bolts using the provided ratchet tool.
- Apply Cover: Drape the poly jacquard cover over the assembled metal frame. Adjust it to fit snugly and smoothly.

A close-up of a corner joint on the metal frame, demonstrating the Quick Lock assembly mechanism.

A detailed view of the steel slats, showing the integrated foam padding designed to prevent noise and protect the mattress.
For detailed visual instructions, please refer to the official Installation Manual (PDF).
Operating
Mattress Compatibility
The ZINUS Smart Box Spring is designed with closely spaced slats to provide optimal support for various mattress types, including:
- Latex mattresses
- Memory foam mattresses
- Traditional spring mattresses
Weight Capacity
This Queen size box spring is engineered to support a maximum weight capacity of 700 lbs. Ensure that the combined weight of the mattress and occupants does not exceed this limit.

This image displays the dimensions of the Queen 7.5 inch Smart Box Spring (79 inches long, 59.5 inches wide, 7.5 inches high) and indicates a weight capacity of 700 lbs.
Maintenance
Cleaning
The poly jacquard cover can be spot cleaned with a mild detergent and damp cloth. Avoid using harsh chemicals or abrasive cleaners. Allow the cover to air dry completely before placing the mattress back on the box spring.
Regular Checks
Periodically inspect all bolts and connections to ensure they remain tight. Re-tighten any loose bolts to maintain the stability and integrity of the box spring.

The fully assembled ZINUS Smart Box Spring, showcasing the fitted poly jacquard cover over the metal frame.
Troubleshooting
Squeaking Noises
If you experience squeaking noises, check the following:
- Bolt Tightness: Ensure all assembly bolts are securely tightened. Loose connections can cause movement and noise.
- Cross Bar Orientation: Verify that the middle support beam and all cross bars are installed with the thin foam layer facing upwards. This foam layer is crucial for preventing metal-on-metal friction and reducing noise.
- Bed Frame Compatibility: Ensure the box spring is placed on a stable and level bed frame or platform. Uneven surfaces can put stress on the box spring, leading to noise.
Stability Issues
If the box spring feels unstable, re-check all connections and ensure the frame is assembled correctly according to the instructions. Confirm that the box spring is placed on a flat, sturdy surface.
Product Specifications
| Product Dimensions | 79 x 59.5 x 7.5 inches (L x W x H) |
| Item Weight | 50.5 pounds |
| Manufacturer | Zinus |
| Model Number | OLB-QLBS-75Q |
| Fabric Type | Steel Interior Frame With Steel Slats and a Poly Jacquard Cover |
| Assembly Required | Yes |
| Included Components | Foundation, Steel Slats, Cover |
Warranty Information
The ZINUS Quick Lock Metal Smart Box Spring comes with a worry-free 5-year limited warranty. This warranty covers manufacturing defects and ensures the quality of your product. Please retain your proof of purchase for warranty claims.
For full details regarding warranty terms and conditions, please refer to the documentation included with your product or contact ZINUS customer support.
Customer Support
If you have any questions, require assistance with assembly, or need to report an issue, please contact ZINUS customer support. You can find contact information on the ZINUS official website or through your retailer.
Additional resources, including the Installation Manual (PDF), are available online.








