1. Product Overview
The SOFTSEA Full Size Upholstered Platform Bed with Twin Trundle is designed to provide a versatile and space-saving sleeping solution. Featuring a soft linen fabric upholstery and a sturdy wooden frame, this bed offers both comfort and durability. The integrated twin trundle can be used as an additional pull-out bed or elevated to match the main bed's height, making it ideal for guests or shared spaces. No box spring is required for either the main bed or the trundle.

Image 1.1: The SOFTSEA Full Size Upholstered Platform Bed with the twin trundle fully extended. This image shows the main bed frame with its wooden slats and the pull-out trundle bed, also equipped with wooden slats, positioned alongside it. The headboard is upholstered in a light beige fabric.
2. Safety Information
Please read and understand all instructions before assembly and use. Keep these instructions for future reference. Failure to follow these instructions may result in injury or damage to the product.
- Ensure all parts are present and undamaged before beginning assembly. Do not use damaged parts.
- Assembly should be performed by at least two adults to ensure safety and ease of construction.
- Tighten all fasteners securely, but do not overtighten. Periodically check and re-tighten fasteners as needed.
- Keep small parts and packaging materials away from children to prevent choking hazards.
- Do not allow children to play on or under the bed without supervision.
- Ensure the bed is placed on a flat, stable surface.
- Do not exceed the recommended weight capacity for the main bed or the trundle.
3. Assembly Instructions
This product requires full assembly. All necessary tools are included. It is recommended that two people assemble this bed.
3.1. Parts Identification
Before starting, identify all components. Parts are labeled for easy identification. Refer to the included assembly diagram for a complete list of parts and hardware.
3.2. Step-by-Step Assembly
- Unpack and Organize: Carefully unpack all components and lay them out on a clean, soft surface (e.g., a carpet or blanket) to prevent scratches. Group similar parts together.
- Assemble the Main Bed Frame: Follow the numerical sequence in the provided assembly manual to connect the side rails, footboard, and headboard. Ensure all connections are secure.
- Install Main Bed Slats: Attach the wooden slats to the main bed frame using the provided fasteners. Ensure slats are evenly spaced and securely fastened to provide proper mattress support.
- Assemble the Trundle Frame: Construct the trundle frame according to the instructions, attaching its wheels or glides.
- Install Trundle Slats: Secure the wooden slats to the trundle frame.
- Insert Trundle: Carefully slide the assembled trundle frame under the main bed frame. Ensure it glides smoothly.

Image 3.1: The bed frame with the trundle neatly tucked underneath, demonstrating its space-saving design. The main bed's wooden slats are visible, and the trundle is fully concealed.

Image 3.2: A side profile view of the bed, clearly showing the trundle bed stored beneath the main platform bed. This illustrates how the trundle is integrated into the bed's design for compact storage.
4. Operating Instructions
4.1. Using the Main Bed
Place your full-size mattress directly onto the wooden slats of the main bed frame. No box spring is needed. Ensure the mattress is centered and fits securely within the frame.
4.2. Operating the Twin Trundle
- To Pull Out: Gently pull the trundle frame from under the main bed. It is equipped with wheels for smooth movement.
- To Lay Flat (Pull-out Bed): If the trundle is designed to lay flat, ensure its legs are folded down or locked into the flat position. Place a twin-size mattress on the trundle slats.
- To Erect (Elevate): For models with an erecting feature, carefully lift the trundle frame until its support mechanism locks into the elevated position, matching the height of the main bed. This creates a larger sleeping surface or a unified look. Refer to the specific mechanism in your assembly guide for detailed instructions on locking the trundle in the erect position.
- To Store: When not in use, remove the mattress from the trundle (if applicable), fold down any elevated supports, and gently push the trundle back under the main bed until it is fully concealed.

Image 4.1: The bed with the trundle partially pulled out, illustrating the ease of access and the mechanism for extending the secondary sleeping area. The trundle's frame and slats are visible as it emerges from beneath the main bed.
5. Maintenance and Care
- Cleaning Fabric: For general cleaning, gently vacuum the upholstered fabric to remove dust and debris. For spills, blot immediately with a clean, dry cloth. For tougher stains, use a mild fabric cleaner following the product's instructions, testing on an inconspicuous area first.
- Cleaning Wood/MDF: Wipe wooden and MDF surfaces with a soft, damp cloth. Avoid harsh chemicals or abrasive cleaners.
- Fastener Check: Periodically (every 3-6 months) check all bolts and screws to ensure they are tight. Re-tighten as necessary to maintain stability and prevent squeaking.
- Avoid Direct Sunlight: Prolonged exposure to direct sunlight can cause fabric fading.
- Avoid Excessive Moisture: Keep the bed in a dry environment to prevent damage to the wood and fabric.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Bed feels wobbly or unstable. | Loose fasteners. | Check and tighten all bolts and screws. Ensure the bed is on a level surface. |
| Squeaking noises. | Loose connections or friction between parts. | Re-tighten all fasteners. Apply a small amount of lubricant (e.g., silicone spray) to points of friction if necessary, avoiding fabric. |
| Trundle does not slide smoothly. | Obstruction, dirty wheels, or uneven floor. | Check for any objects blocking the trundle's path. Clean trundle wheels. Ensure the floor surface is clear and level. |
| Trundle does not lock into elevated position (if applicable). | Mechanism not fully engaged or damaged. | Ensure the trundle is fully extended and lifted correctly. Check the locking mechanism for any obstructions or damage. Refer to assembly guide for specific locking steps. |
7. Product Specifications
| Feature | Detail |
|---|---|
| Model Number | x8 |
| Overall Dimensions | 80.7"L x 55.9"W x 44.9"H |
| Bed Inner Dimensions | 75.6''L x 53.9''W |
| Trundle Dimensions | 74.8''L x 39.2''W |
| Recommended Mattress Thickness (Main Bed) | 8-10 inches |
| Recommended Mattress Thickness (Trundle) | 6 inches |
| Color | Light Beige |
| Weight Capacity (Each Bed) | 300 LBS |
| Overall Product Weight | 89.8 LBS |
| Material | Linen, Pine Wood, MDF |
| Assembly Required | Yes (Full Assembly Needed) |
| Number of Slats (Main Bed) | 10 |
| Number of Slats (Trundle) | 8 |
| Special Feature | Trundle can be Flat or Erected |

Image 7.1: Detailed dimensions diagram of the SOFTSEA Full Size Upholstered Platform Bed and its twin trundle. This image provides precise measurements for the overall length, width, height, and internal dimensions of both the main bed and the trundle, including headboard height and slat clearances.
8. Warranty Information
This SOFTSEA product comes with a one-year warranty covering manufacture defects from the date of purchase. This warranty does not cover damage resulting from improper assembly, misuse, abuse, accidents, or normal wear and tear. Please retain your proof of purchase for warranty claims.
9. Customer Support
If you have any questions, concerns, or require assistance with assembly or parts, please do not hesitate to contact SOFTSEA customer support. Refer to your purchase documentation or the retailer's website for contact information. We are committed to providing support to ensure your satisfaction.