1. Introduction and Overview
This manual provides detailed instructions for the assembly, operation, and maintenance of your Zinus SmartBase 18-Inch Heavy Duty Metal Platform Bed Frame. This innovative mattress foundation is designed to provide robust support for your mattress without the need for a traditional box spring, offering ample underbed storage space and tool-free assembly.

Figure 1: Zinus SmartBase 18-Inch Heavy Duty Metal Platform Bed Frame
2. Safety Information
- Exercise caution around sharp edges during assembly and handling.
- Do not exceed the maximum weight capacity of 1500 lbs for Twin and Twin XL sizes, and 3000 lbs for all other sizes.
- Ensure all easy locking systems are properly secured before placing a mattress on the frame.
- Keep small parts away from children to prevent choking hazards.
- Periodically check all connections to ensure they remain tight and secure.

Figure 2: Recessed leg design for enhanced safety.
3. Package Contents
Verify that all components are present before beginning assembly:
- Zinus SmartBase Foundation (folded sections)
- Hardware Kit (bolts and wing nuts for connecting sections)
- Non-Slip Mattress Pad (optional, for mattress stability)
- Installation Manual
4. Setup and Assembly Instructions
The Zinus SmartBase is designed for quick and tool-free assembly. Follow these steps:
- Unpack the Frame: Carefully remove the folded bed frame sections from the packaging.
- Unfold the Base: Place each folded section on the floor in the desired location. Gently unfold each section until it lies flat.
- Extend the Legs: Extend all support legs outwards until they are fully locked into position. Ensure the locking mechanisms click into place for stability.
- Connect the Sections: Align the two main sections of the bed frame. Use the provided bolts and wing nuts from the hardware kit to securely connect the sections in the middle. Tighten firmly by hand.
- Optional Non-Slip Pad: If included, place the non-slip mattress pad directly on top of the assembled frame before adding your mattress. This helps prevent the mattress from shifting.

Figure 3: The bed frame is designed to unfold easily from a compact state.
Assembly Video
Video 1: Official Zinus SmartBase Zero Assembly Mattress Foundation overview. This video demonstrates the simple, tool-free setup process of the bed frame.
5. Operating Instructions
Once assembled, your Zinus SmartBase is ready for use. Simply place your mattress directly onto the metal platform. No box spring is required, as the sturdy steel frame provides optimal support for all mattress types, including memory foam, latex, and innerspring mattresses.

Figure 4: The bed frame with a mattress and underbed storage.
Underbed Storage
The 18-inch height of the frame provides approximately 17 inches of clearance, offering valuable space for storing items such as boxes, bins, or seasonal clothing. This feature helps maximize space in your bedroom.

Figure 5: Detailed view of the 17-inch underbed clearance.
6. Maintenance
- Cleaning: Wipe the metal frame with a dry cloth to remove dust and debris. Avoid using harsh chemicals or abrasive cleaners.
- Inspection: Periodically inspect the frame for any loose connections or signs of wear. Tighten any loose bolts as needed.
- Noise Reduction: The frame is engineered to be silent. If any squeaking occurs, re-check all connections and ensure they are securely tightened.

Figure 6: Engineered design for silent operation.
7. Troubleshooting
- Squeaking Noise: If the frame makes noise, ensure all bolts connecting the sections and all leg braces are fully tightened.
- Mattress Slipping: Utilize the included non-slip mattress pad by placing it between the frame and your mattress.
- Instability: Verify that all legs are fully extended and locked into place, and that the frame sections are securely joined.
8. Specifications
| Feature | Detail |
|---|---|
| Size | Twin |
| Product Dimensions | 75"L x 39"W x 18"H |
| Special Features | Durable, No Box Spring Needed, Underbed Storage |
| Color | Black |
| Material | Alloy Steel (Painted Finish) |
| Assembly Required | Yes (Tool-Free) |
| Item Weight | 21.4 pounds |
| Maximum Weight Capacity | 1500 lbs (Twin/Twin XL), 3000 lbs (other sizes) |

Figure 7: Dimensions and weight capacity for the Twin size frame.
9. Warranty and Support
Your Zinus SmartBase 18-Inch Heavy Duty Metal Platform Bed Frame includes a 5-year limited warranty. For warranty claims, product support, or any questions not covered in this manual, please contact Zinus customer service.
Zinus Customer Service:
- Website: www.zinus.com
- Email: support@zinus.com
- Phone: (Toll-free number, if available, or refer to website)





