1. Introduction and Overview
This manual provides essential information for the safe assembly, operation, and maintenance of your Bonnlo Twin Over Twin Bunk Bed. Designed with a sturdy metal frame, flat ladder, and high guardrail, this bunk bed is suitable for kids, teens, and adults, offering a space-saving solution for any room.

Image 1: Bonnlo Twin Over Twin Bunk Bed
2. Safety Information
Please read and understand all safety warnings and instructions before assembly and use. Failure to follow these instructions can result in serious injury.
- Weight Limits: The upper bunk has a weight limit of 400 lb. The lower bunk also has a weight limit of 400 lb. Do not exceed these limits.
- Guardrail: The top bunk features an extra-high 13.18-inch guardrail to provide maximum safety and prevent falls. Ensure the guardrail is properly installed and secured at all times.
- Stability: An optional wall-mounted bracket is included to increase the stability of the bed. It is highly recommended to use this bracket.
- Assembly: Assembly should be performed by at least 2 adults. Improper assembly can lead to instability and injury.
- Mattress: Use only standard sized twin mattresses. Ensure the mattress thickness is appropriate for the bunk bed to maintain effective guardrail height.
- Ladder Safety: Always use the ladder for accessing the upper bunk. Do not jump on or off the bunk bed.

Image 2: Reinforced Guard Rail (13.2" Height Bedrail for Safety)
3. Package Contents
Verify that all components are present before beginning assembly. If any parts are missing or damaged, please contact customer service.
- Bunk bed frame components (steel tubes, connectors)
- Metal support slats
- Flat ladder with anti-slip rubber covering
- Hardware pack (screws, bolts, washers, Allen wrench)
- Optional wall-mounted bracket
- Assembly instructions (printed document)
Note: Standard sized twin mattresses are NOT included with this product.
4. Assembly Instructions (Setup)
Assembly of this bunk bed typically takes 2-3 hours and requires at least 2 adults. Follow the step-by-step instructions provided in the included manual carefully.
- Unpack and Identify Parts: Lay out all components and hardware. Compare them with the parts list in your printed manual to ensure everything is present.
- Assemble Bed Frames: Follow the diagrams to connect the main frame components for both the upper and lower bunks. Ensure all connections are secure but do not fully tighten bolts until instructed.
- Install Support Slats: Place the metal support slats onto the designated areas of each bed frame. These slats eliminate the need for a box spring.
- Attach Ladder: The ladder is designed with upgraded wide flat steps and anti-slip rubber covering for comfort. It can be attached to either end of the bunk bed according to your room layout. Secure it firmly.
- Install Guardrail: Ensure the 13.18-inch high guardrail for the top bunk is correctly installed and all fasteners are tightened.
- Final Tightening: Once all components are in place and aligned, fully tighten all bolts and screws.
- Wall-Mounted Bracket (Optional but Recommended): For enhanced stability, install the optional wall-mounted bracket as per the instructions.

Image 3: Removable Ladder Feature

Image 4: Upgraded Flat Ladder Rungs with Rubber Covering
5. Usage
The Bonnlo Twin Over Twin Bunk Bed is designed for efficient space utilization in various settings.
- Mattress Compatibility: This bunk bed is designed to fit standard twin-sized mattresses. No box spring is required due to the integrated metal support slats.
- Space-Saving: Its compact design is ideal for maximizing space in smaller rooms, dorms, or shared bedrooms.
- Child Friendly: The high guardrail and sturdy construction make it a safe option for children, while its heavy-duty design also accommodates teens and adults.

Image 5: Key Product Features
6. Maintenance
Regular maintenance will help prolong the life and safety of your bunk bed.
- Cleaning: The metal frame is easy to clean. Wipe down with a damp cloth and mild detergent as needed. Avoid abrasive cleaners.
- Check Connections: Periodically inspect all bolts, screws, and connections to ensure they remain tight. Re-tighten if necessary.
- Inspect for Damage: Regularly check the frame, ladder, and guardrails for any signs of wear, damage, or loose parts. Address any issues promptly.
7. Troubleshooting
If you encounter any issues with your bunk bed, refer to these common troubleshooting tips:
- Squeaking or Wobbling: This is often caused by loose connections. Re-tighten all bolts and screws. Ensure the bed is on a level surface. If using, verify the wall-mounted bracket is securely installed.
- Difficulty with Ladder: Ensure the ladder is correctly hooked onto the bed frame and all fasteners are tight. The ladder can be attached to either side.
- Missing Parts: If you discover any missing parts during assembly, do not proceed. Contact customer support immediately for assistance.
8. Specifications
| Feature | Detail |
|---|---|
| Model | Twin Over Twin Bunk Bed |
| Overall Dimensions (L x W x H) | 77.95’’ x 41.54’’ x 64.96’’ |
| Upper Bunk Weight Capacity | 400 lb |
| Lower Bunk Weight Capacity | 400 lb |
| Material | Strong Steel Construction with Black Powder Coat Finish |
| Guardrail Height | 13.18 inches |
| Ladder Type | Flat Rungs with Anti-slip Rubber Covering |
| Mattress Size Compatibility | Standard Twin (1000mm width) |
| Box Spring Required | No |
| Installation Method | Assembly |
| Origin | US |
| Storage | No |

Image 6: Product Dimensions and Weight Capacity
9. User Tips
- Assembly Team: While the instructions state 2 adults, some users find that having a third person can significantly speed up and ease the assembly process, especially when lifting and aligning the upper bunk.
- Ladder Placement: Take advantage of the removable ladder feature. Before fully tightening the bed, test placing the ladder on both sides to determine which orientation best suits your room layout and accessibility needs.
- Mattress Selection: Although no box spring is needed, selecting a good quality mattress will enhance comfort and support, especially given the generous weight capacity of each bunk.
10. Warranty and Support
Your Bonnlo Twin Over Twin Bunk Bed comes with a Worry-Free 3-Year Quality Warranty. If you have any questions, concerns, or require assistance with your product, please do not hesitate to contact our customer service team. Our friendly customer service team aims to respond within 24 hours.