1. Introduction
Thank you for choosing the Superay 5 Inch Twin Box Spring Bed Base Mattress Foundation. This product is designed to provide stable and durable support for your mattress, enhancing your sleep experience. This manual contains important information regarding the assembly, use, and maintenance of your new box spring. Please read it thoroughly before assembly and retain it for future reference.
This box spring features a robust metal frame, a noise-free design, and an easy-to-clean fabric cover. It is compatible with various mattress types and bed frames.

Image 1: The Superay 5 Inch Twin Box Spring Bed Base (top) and its underlying metal frame structure (bottom).
2. Safety Information
- Read all instructions carefully before assembly.
- Ensure all parts are present and undamaged before beginning assembly. Do not use if any parts are missing or damaged.
- Assemble the unit on a soft, non-abrasive surface (e.g., carpet or cardboard) to prevent scratching.
- Do not overtighten screws during assembly, as this may damage the threads or components.
- Keep small parts and packaging materials away from children and pets to prevent choking hazards.
- This box spring is designed to support a maximum weight of 1000 lbs (453 kg), including mattress and occupants. Do not exceed this weight limit.
- Periodically check all connections to ensure they remain tight.
- This product is intended for indoor use only.
3. Package Contents
Before assembly, verify that all components listed below are present in your package. If any parts are missing or damaged, please contact customer support.
- Metal Frame Components (various sections for assembly)
- Metal Slats (multiple pieces)
- Fabric Cover (Black, 5 Inch height)
- Assembly Hardware (screws, bolts, washers, nuts)
- Assembly Tool (Allen wrench)
- Instruction Manual

Image 2: Exploded view illustrating the relationship between the mattress, box spring, and bed frame. Note that the mattress and bed frame are not included with this product.
4. Setup and Assembly Instructions
Assembly is designed to be straightforward. It is recommended to have two people for easier assembly. All necessary tools are included.
- Unpack Components: Carefully remove all parts from the packaging. Lay them out on a clean, soft surface to prevent damage.
- Assemble the Outer Frame: Connect the main metal frame sections using the provided hardware. Ensure all connections are secure but do not fully tighten screws until all frame pieces are loosely assembled. The frame features a Round Corner Design for safety.
- Install Support Slats: Place the metal slats into the designated U-Shaped Grooves on the frame. These slats are designed for optimal mattress support and load distribution. This model includes 13 groups of metal slats for enhanced stability.
- Secure All Connections: Once all frame sections and slats are in place, fully tighten all screws and bolts using the provided Allen wrench. Ensure all connections are firm to prevent wobbling or noise. The frame incorporates a Mute Foam Strip to prevent squealing.
- Apply the Fabric Cover: Carefully slide the black fabric cover over the assembled metal frame. Ensure it fits snugly and evenly around all sides. The cover is designed to be easily removable for cleaning.

Image 3: Close-up details of the frame's construction, highlighting the round corner design, U-shaped slat grooves, and mute foam strip.

Image 4: Illustration of the fabric cover being placed onto the assembled metal box spring frame.

Image 5: Diagram comparing the slat density of this box spring (13 groups) versus other designs, indicating improved load bearing and mattress protection.
5. Operating Instructions (Usage)
Once assembled, your Superay Box Spring is ready for use.
- Placement: Position the assembled box spring onto a compatible bed frame. Ensure it is centered and stable.
- Mattress Placement: Carefully place your mattress on top of the box spring.
- Weight Limit: The box spring is designed to support a maximum combined weight of 1000 lbs (453 kg), including the mattress and occupants. Do not exceed this limit to ensure product longevity and safety.

Image 6: The Superay box spring installed on a bed frame, ready for a mattress.

Image 7: The Superay box spring with a mattress and bedding, demonstrating its appearance in a complete bed setup.
6. Maintenance
- Cleaning the Frame: The metal frame can be wiped clean with a dry cloth. Avoid using harsh chemicals or abrasive cleaners.
- Cleaning the Cover: The fabric cover is removable and can be cleaned according to its care label. Typically, spot cleaning with a mild detergent and damp cloth is sufficient. Ensure the cover is completely dry before reattaching.
- Periodic Inspection: Periodically inspect all bolts and screws to ensure they remain tight. Retighten if necessary to maintain stability and prevent noise.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Squeaking or Noise | Loose connections; improper assembly; friction between components. |
|
| Instability or Wobbling | Loose connections; uneven placement on bed frame. |
|
| Parts Missing or Damaged | Manufacturing defect; shipping damage. | Contact Superay customer support immediately for replacement parts. |
8. Specifications
| Brand | Superay |
| Model Number | SUP-MT23 |
| Size | Twin |
| Product Dimensions (L x W x H) | 187.45 x 96.52 x 12.7 cm (73.8 x 38 x 5 inches) |
| Item Weight | 9.77 kg (21.54 lbs) |
| Material | Alloy Steel, Metal |
| Color/Finish | Black |
| Maximum Weight Capacity | 1000 lbs (453 kg) |
| Special Features | Squeak Resistant, Easy Assembly, Durable Construction, Removable Cover |
| Included Components | Metal Frame, Metal Slats, Fabric Cover, Assembly Hardware, Assembly Tool |

Image 8: Dimensional diagram for the Twin size box spring, indicating its length, width, and height. Note: The 3000 lbs icon refers to the structural integrity of the frame, while the practical maximum user weight capacity is 1000 lbs.
9. Warranty and Support
Superay products are manufactured with quality and durability in mind. While specific warranty details are not provided in this manual, please retain your proof of purchase. For any questions, missing parts, or concerns regarding your Superay Box Spring, please contact the retailer or Superay customer support directly. Contact information can typically be found on the product packaging or the retailer's website.

