Important Safety Information
Please read and understand all instructions before assembling and using this bunk bed. Failure to follow these instructions may result in serious injury.
- Always ensure all connections are securely tightened before use. Periodically check and re-tighten as necessary.
- The top bunk is not suitable for children under 6 years of age.
- Use only mattresses that are 6 inches thick for both bunks.
- Ensure the mattress foundation is properly installed and secured.
- Do not allow horseplay on or under the bed.
- Always use the ladder for entering and exiting the top bunk. Do not use other means.
- The maximum weight capacity for each bunk is 400 lbs. Do not exceed this limit.
- Keep children away from the assembly area during construction.
Package Contents
Your SDHYL Twin Over Twin Bunk Bed package includes the following items. Please verify all components are present before beginning assembly.
- 1 x Twin Over Twin Metal Bunk Bed Frame
- 2 x 6-inch Twin Memory Foam Mattresses
- Assembly Hardware (bolts, nuts, washers, Allen wrench)
- Instruction Manual

This image shows the two main components of the set: the metal twin-over-twin bunk bed frame and the two 6-inch twin memory foam mattresses, highlighting that all necessary items are included.
Note: You will receive 3 packages in total. They may not arrive at the same time, but the delivery intervals will be short.
Assembly Instructions
Before You Begin
- Clear a spacious area for assembly.
- Unpack all components and verify against the package contents list.
- Keep all hardware organized and within reach.
- Two people are recommended for assembly.
Step-by-Step Assembly
While specific detailed steps are provided in the included paper manual, the general assembly process involves:
- Assemble the headboards and footboards for both the upper and lower bunks.
- Attach the side rails to form the bed frames.
- Install the mattress support slats or grid for both bunks.
- Secure the guardrails to the top bunk frame.
- Attach the ladder securely to the bunk bed frame.
- Place the 6-inch memory foam mattresses on each bunk.
- Ensure all bolts are tightened securely. Do not overtighten.

This diagram illustrates the key dimensions of the bunk bed frame: 78 inches in length, 41.3 inches in width, and 63 inches in height. The load capacity per bunk is indicated as 400 lbs.

This image displays the SDHYL Twin Over Twin Bunk Bed fully assembled, complete with two 6-inch memory foam mattresses. The bed features a black metal frame and is shown in a modern bedroom environment.
Operating Instructions
Using the Bunk Bed
- Ensure the bunk bed is placed on a level surface.
- Do not attach or hang items on any part of the bunk bed that are not designed for use with the bed.
- The top bunk is equipped with full-length guardrails for safety. Always ensure these are properly installed and maintained.

A detailed view of the top bunk's security guardrail, emphasizing its robust construction and the secure design for user safety. Icons indicate easy installation, bold guardrail, and bold keel.
Ladder Usage
- Always face the ladder when ascending or descending.
- Use both hands to grip the ladder rungs.
- Ensure the ladder is securely attached to the bunk bed frame at all times.
Weight Capacity
Each bunk is designed to support a maximum weight of 400 lbs. Do not exceed this weight limit to prevent structural damage or injury.
Maintenance
Frame Care
- Wipe the metal frame with a soft, damp cloth. Avoid abrasive cleaners.
- Periodically check all bolts and connections and re-tighten them as needed to ensure stability.
Mattress Care
- The mattress cover is removable and washable for easy cleaning. Follow the care instructions on the mattress label.
- For general cleaning, spot clean with a mild detergent and allow to air dry completely.
- Rotate mattresses periodically to ensure even wear.

This image shows a hand pressing into the surface of the memory foam mattress, illustrating its soft and comfortable texture. Accompanying icons highlight 'Super Comfort', 'Soft & Breathable', and 'Good Night's Sleeping'.

A diagram illustrating the internal structure of the 6-inch memory foam mattress, featuring a breathable knit fabric 3D cover, 2-inch gel-infused memory foam, and 4-inch high-density foam. It also points out the washable zipper design for the cover.
Troubleshooting
If you encounter any issues with your bunk bed, refer to the following common problems and solutions:
- Squeaking Noises: Check all bolts and connections. Tighten any loose hardware. Ensure the bed is on a level surface.
- Instability/Wobbling: Verify that all frame components are correctly assembled and all bolts are fully tightened. Ensure the bed is not placed on an uneven floor.
- Missing Parts: If you find any parts missing upon unboxing, please contact customer support immediately. Refer to the package contents list.
- Difficulty Assembling: Review the step-by-step instructions carefully. Ensure you have all necessary tools and that components are oriented correctly. Two people are recommended for assembly.
Specifications
| Feature | Detail |
|---|---|
| Model Number | 20HBND-YCTC104 |
| Brand | SDHYL |
| Product Dimensions (L x W x H) | 190 x 99 x 160 cm (78 x 41.3 x 63 inches) |
| Item Weight | 30 kg |
| Material | Metal (Frame), Memory Foam (Mattress) |
| Colour | Black |
| Mattress Included | Yes, Two 6-inch Twin Memory Foam Mattresses |
| Weight Capacity (per bunk) | 400 lbs |
| Special Features | All-in-One Set, Heavy Duty Frame, Mattress Included |
Warranty and Support
For warranty information, technical support, or to order replacement parts, please contact SDHYL customer service.
- Customer Service: Refer to the contact information provided with your purchase documentation or visit the official SDHYL website.
- Please have your model number (20HBND-YCTC104) and purchase date ready when contacting support.