Introduction
Thank you for choosing the Merax 42.9"W 3-in-1 Convertible Sofa Bed Sleeper. This versatile furniture piece is designed to function as a comfortable sofa, a chaise lounge, and a pull-out bed, making it ideal for small spaces and accommodating guests. It also features integrated wing tables and USB charging ports for added convenience. Please read this manual thoroughly before assembly and use to ensure proper operation and longevity of your product.
Safety Information
- Read all instructions: Ensure you understand all assembly and operating instructions before use.
- Keep children away: During assembly, keep children and pets away from the work area. Small parts can be a choking hazard.
- Use on a level surface: Always place the sofa bed on a flat, stable, and level surface to prevent tipping.
- Weight limits: Do not exceed the maximum weight capacity of 250 lbs for the sofa and 200 lbs for the bed.
- Avoid sharp objects: Do not use sharp objects near the upholstery to prevent damage.
- Electrical safety: Ensure USB charging ports are used with compatible devices and cables. Do not overload the ports. Disconnect from power if not in use for extended periods.
- Regular inspection: Periodically check all bolts and connections to ensure they remain tight.
Package Contents
Please verify that all components are present before beginning assembly. If any parts are missing or damaged, contact customer support.
- Sofa frame components
- Seat cushions
- Backrest cushions
- Wing tables (pre-attached or separate)
- USB charging module (pre-installed)
- Hardware pack (screws, bolts, Allen wrench)
- Instruction manual
Setup and Assembly
Assembly typically requires two adults. Ensure you have enough space to work. An Allen wrench is usually provided in the hardware pack.
Dimensions Overview
Refer to the diagram below for product dimensions to ensure it fits your intended space.
General Assembly Steps (Consult specific diagrams in your included manual for detailed steps)
- Unpack all components and lay them out on a clean, soft surface to prevent scratches.
- Attach the legs to the main sofa frame using the provided hardware.
- Connect the backrest to the seat frame, ensuring all bolts are securely tightened.
- If the wing tables are not pre-attached, secure them to the armrests according to the instructions.
- Place the cushions onto the sofa.
- Ensure all connections are firm and stable before use.
Operating Instructions
3-in-1 Functionality Overview
The Merax sofa bed offers three primary configurations: sofa, chaise lounge, and full bed.
Converting from Sofa to Bed
To convert the sofa into a bed or chaise lounge:
- Gently pull the hidden bed frame from underneath the main seat cushion.
- Lift the pulled-out section upwards until it locks into place, creating a continuous sleeping surface.
- Adjust the backrest to your desired angle (see 'Adjusting Backrest' section).

Watch this video for a demonstration of the sofa bed conversion process. Note: The sofa shown in the video may be a different size (61.4"W) but the conversion mechanism is similar.
Video: Demonstration of converting a similar Merax sofa bed from a sofa to a chaise lounge and then to a full bed, highlighting the pull-out mechanism and adjustable backrest. Also shows the integrated side pockets and cup holder.
Adjusting the Backrest
The backrest can be adjusted to three different positions for optimal comfort: 105°, 145°, and 180° (flat).
- To adjust, push the backrest forward slightly until you hear a click.
- Gently recline it to the next desired position.
- To return to an upright position, push it all the way forward until it resets, then recline to the desired angle.

Using Wing Tables and USB Charging
The sofa bed includes convenient collapsible wing tables and dual USB charging ports.
- Wing Tables: These tables are located on the armrests. Simply pull them up to deploy and push them down to collapse when not in use. They are suitable for holding small items like phones, drinks, or remote controls.
- USB Charging Ports: Located on the side of the armrest, these dual USB ports allow you to charge your electronic devices. Connect your device's USB cable to one of the ports. Ensure the sofa bed is connected to a power source for the USB ports to function.

Maintenance
- Cleaning Fabric: For general cleaning, vacuum the upholstery regularly using a soft brush attachment. For spills, blot immediately with a clean, dry cloth. For stubborn stains, use a mild fabric cleaner following the product's instructions and test on an inconspicuous area first.
- Frame Care: Wipe the frame and legs with a soft, damp cloth. Avoid harsh chemicals.
- Cushion Care: Rotate cushions periodically to ensure even wear. The loose pillow has a detachable cover for easier cleaning.
- USB Ports: Keep USB ports free of dust and debris. Do not insert foreign objects.
Troubleshooting
- Difficulty converting to bed: Ensure no obstructions are under the sofa. Check that the pull-out mechanism is aligned correctly. Apply gentle, even pressure when pulling and lifting.
- Backrest not adjusting: Ensure you are pushing the backrest slightly forward to release the locking mechanism before reclining. Check for any fabric or debris obstructing the mechanism.
- USB ports not charging: Verify that the sofa bed is properly connected to a working power outlet. Try a different USB cable or device to rule out cable/device issues.
- Squeaking noises: Check all assembly bolts and tighten any that are loose.
Specifications
| Feature | Detail |
|---|---|
| Brand | Merax |
| Model | 42.9"W 3-in-1 Convertible Sofa Bed Sleeper |
| Product Dimensions (Sofa) | 42.9"D x 36.2"W x 35.8"H |
| Product Dimensions (Bed) | 42.9"W x 71.7"L x 17.3"H (approximate) |
| Seating Capacity | 2.0 |
| Material Type | Linen, Iron, MDF |
| Color | Beige |
| Special Features | 3 Levels Adjustable Backrest (105°/145°/180°), Wing Tables, Dual USB Charging |
| Sofa Weight Capacity | 250 lbs |
| Bed Weight Capacity | 200 lbs |
| UPC | 199193101219 |
Warranty and Support
For warranty information or technical support, please refer to the documentation included with your purchase or contact Merax customer service directly. Keep your purchase receipt for warranty claims.





