ZINUS AZ-BSLB-K
ZINUS Keenan Metal Mattress Foundation User Manual
Brand: ZINUS
Model: AZ-BSLB-K
Product Overview
The ZINUS Keenan Metal Mattress Foundation is an all-in-one support system designed to combine the function of a box spring and a bed frame. Constructed with a durable steel framework, it provides reliable support for your mattress. This foundation is designed for easy assembly and includes integrated headboard brackets for personalization. It is suitable for various mattress types and offers a sturdy base for a comfortable sleep experience.

Figure 1: ZINUS Keenan Metal Mattress Foundation with a mattress and bedding.
Important Safety Information
- Exercise caution around sharp edges during assembly and handling.
- Do not exceed the maximum weight capacity of 700 pounds (350 pounds for Twin size).
- Follow all assembly instructions carefully to ensure stability and prevent injury.
- Be cautious of pinch points when handling and attaching headboard brackets.
- Ensure all connections are securely tightened before use.
Components List
Before beginning assembly, verify that all components are present and undamaged. All parts and necessary tools are typically packed within one compact box.
- Foundation Frame (various sections)
- Support Legs
- Headboard Brackets (integrated)
- Slats
- Fabric Cover
- Assembly Tools (e.g., Allen wrench) and Hardware

Figure 2: The metal framework of the ZINUS Keenan Mattress Foundation before assembly.
Assembly Instructions
Assembly of the ZINUS Keenan Metal Mattress Foundation is designed to be straightforward and can typically be completed in under 20 minutes. Follow these steps carefully:
- Unpack and Identify Parts: Carefully remove all components from the packaging. Lay out all frame sections, legs, and hardware. Refer to the included installation manual for a detailed parts list and diagrams.
- Assemble the Metal Frame: Connect the various sections of the metal frame according to the provided diagrams. Ensure that all pieces are correctly oriented (some may be labeled "UP"). Secure connections using the provided hardware and tools. The slats will typically snap into place within the frame.
- Attach Support Legs: Once the main frame is assembled, attach the support legs to the designated points on the frame. Ensure they are securely tightened to provide stable support for the foundation.
- Apply the Fabric Cover: Carefully slide the fabric cover over the assembled metal frame. The cover is designed to fit snugly and typically features a zipper closure around the bottom edge. Ensure the cover is smooth and evenly distributed.
- Attach Headboard Brackets (Optional): The foundation includes integrated headboard brackets. If you wish to attach a headboard, align your standard-sized headboard with these brackets and secure it using appropriate hardware (hardware for headboard attachment is not included with the foundation).

Figure 3: Detail of the integrated headboard bracket and support leg.

Figure 4: The ZINUS Keenan Mattress Foundation with its fabric cover installed.
Operating and Usage
Once assembled, the ZINUS Keenan Metal Mattress Foundation is ready for use. Simply place your mattress directly on top of the foundation. The sturdy steel framework and multiple support legs provide a stable and durable base for your mattress, eliminating the need for a separate bed frame in many cases. Ensure the foundation is placed on a flat, level surface for optimal performance and stability.

Figure 5: The foundation provides solid support for your mattress.
Maintenance
To maintain the appearance and longevity of your ZINUS Keenan Metal Mattress Foundation, follow these simple care instructions:
- Cleaning: Wipe the metal frame and fabric cover with a dry cloth as needed to remove dust and debris. Avoid using harsh chemicals or abrasive cleaners, which may damage the finish or fabric.
- Inspection: Periodically check all bolts and connections to ensure they remain tight. Re-tighten any loose hardware to maintain stability and prevent squeaking.
Troubleshooting
If you encounter any issues with your ZINUS Keenan Metal Mattress Foundation, consider the following common solutions:
- Squeaking Noises: Squeaking often indicates loose connections. Re-check and tighten all bolts and screws on the metal frame and legs. Ensure the foundation is on a level surface.
- Instability/Wobbling: Verify that all legs are securely attached and that the foundation is placed on a flat, even floor. Ensure the frame sections are fully engaged and tightened.
- Difficulty with Fabric Cover: If the cover is difficult to zip, ensure the metal frame is fully and correctly assembled, and try to gently stretch the fabric while zipping.
For persistent issues or concerns not addressed here, please contact ZINUS customer support.
Specifications
| Brand | ZINUS |
| Model Number | AZ-BSLB-K |
| Size (King) | 80"L x 76"W x 14"H |
| Color | Off-white |
| Material | Alloy Steel (Furniture Finish) |
| Special Feature | No Box Spring Needed, Durable |
| Included Components | Installation Manual, Legs, Headboard Brackets, Foundation, Slat |
| Assembly Required | Yes |
| Product Weight | 53.9 pounds |
| Maximum Weight Capacity | 700 lbs (Twin size: 350 lbs) |
| UPC | 841550081381 |
Warranty and Support
The ZINUS Keenan Metal Mattress Foundation comes with a worry-free 5-year limited warranty, ensuring peace of mind regarding its quality and durability.
For detailed warranty information, additional support, or to access the full installation manual, please refer to the official ZINUS documentation or visit their website. Digital copies of the user guide and installation manual are available for download:
For customer service inquiries, please contact ZINUS directly through their official support channels.
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