1. Introduction
Welcome to the Babyletto Davinci W4099 Marley Crib Toddler Bed Conversion Kit. This kit is designed to transform your Babyletto Marley 3-in-1 Convertible Crib (model W4901, sold separately) into a toddler bed, extending its usability as your child grows. This manual provides essential information for safe assembly, use, and maintenance of your conversion kit.
Key Features
- GREENGUARD Gold Certified: This product has been tested for over 10,000 chemicals, contributing to improved indoor air quality and a healthier environment for your child.
- Compatibility: Specifically designed to match the Babyletto Marley 3-in-1 Convertible Crib (model W4901, sold separately).
- Safe Finish: Features a non-toxic multi-step painting process, ensuring it is lead and phthalate safe.
- Sustainable Material: Constructed from 100% sustainable New Zealand pine wood.
- Easy Conversion: Facilitates a quick and straightforward conversion from a crib to a toddler bed rail.
2. Important Safety Information
Please read all instructions carefully before assembly and use. Keep this manual for future reference. Failure to follow these warnings and instructions could result in serious injury or death.
- Assembly: Ensure all parts are present and undamaged before assembly. Do not use if any parts are missing, broken, or if the product is damaged.
- Compatibility: Always use this conversion kit exclusively with the specified Babyletto Marley 3-in-1 Convertible Crib (model W4901).
- Parts: Do not substitute parts. Use only manufacturer-supplied components.
- Fasteners: Regularly check all bolts and fasteners to ensure they are tight and secure. Retighten as necessary.
- Location: Do not place the toddler bed near windows where cords from blinds or drapes could pose a strangulation hazard. Avoid placing the bed near heat sources such as radiators, heat registers, or fireplaces.
- User Age: The toddler bed is intended for children who can get in and out of the bed unassisted.
- Supervision: Always supervise children around the toddler bed.
- Mattress Fit: Ensure the mattress fits snugly within the bed frame. There should be no gaps larger than 1 inch (2.5 cm) between the mattress and the bed frame.
3. Package Contents
Before beginning assembly, verify that all components listed below are included in your package. If any parts are missing or damaged, do not proceed with assembly and contact customer support.
- Toddler Bed Rail (W4099)
- Hardware Pack (includes necessary bolts, washers, etc.)
- Instruction Manual (this document)

Image: Front view of the Babyletto Davinci W4099 Toddler Bed Conversion Kit, showing the full rail piece.
4. Setup and Assembly
This section details the steps required to convert your Babyletto Marley 3-in-1 Convertible Crib into a toddler bed using the W4099 conversion kit. It is recommended to have a second person assist with assembly.
Tools Required
- Hex Key (often included with the original crib, or standard household tool)
Preparation
- Carefully unpack all components and lay them out on a soft, clean surface (e.g., a blanket or carpet) to prevent scratches.
- Identify all parts and hardware using the package contents list.
- Ensure your Babyletto Marley 3-in-1 Convertible Crib is in the lowest mattress position before beginning the conversion.
Assembly Steps
- Step 1: Remove Crib Side Rail
Begin by carefully removing one of the long side rails from your Babyletto Marley 3-in-1 Convertible Crib. Refer to your original crib's instruction manual for specific details on how to safely detach the side rail. Retain the hardware from this step, as some may be reused for attaching the toddler rail.

Image: Angled view of the Babyletto Davinci W4099 Toddler Bed Conversion Kit, highlighting its structure.
- Step 2: Attach Toddler Bed Rail
Align the W4099 Toddler Bed Rail with the existing holes on the crib's headboard and footboard where the removed side rail was previously attached. Secure the toddler rail using the provided hardware from the conversion kit, or the appropriate hardware from the original crib, as indicated in your crib's manual. Ensure the rail is oriented correctly with the shorter barrier section facing inwards.
- Step 3: Secure All Connections
Once the toddler rail is in place, use the hex key to tighten all bolts securely. Do not overtighten, as this can damage the wood. Verify that the rail is stable, properly aligned with the crib structure, and does not wobble. Perform a final check of all fasteners on the entire bed frame.

Image: Detailed view of the Babyletto Davinci W4099 Toddler Bed Conversion Kit, including its dimensions (53.75" length, 13.5" height, 1" width).
5. Operating Instructions
Once assembled, the toddler bed provides an open side for your child to easily enter and exit the bed independently, fostering their growing independence while still offering a sense of security with the partial rail.
- Mattress Placement: Ensure the mattress from your crib fits snugly within the converted toddler bed frame. There should be no gaps larger than 1 inch (2.5 cm) between the mattress and the bed frame to prevent entrapment.
- Regular Inspection: Periodically inspect the bed for any loose hardware, signs of wear, or damage. Address any issues immediately.
- Safe Use: Instruct your child on safe use of the bed. Do not allow children to jump on the bed, as this can cause damage to the furniture and potential injury.
6. Care and Maintenance
- Cleaning: To clean the toddler bed rail, wipe it with a damp cloth. Avoid using abrasive cleaners, harsh chemicals, or furniture polish, as these can damage the non-toxic finish.
- Hardware Inspection: Regularly check all screws, bolts, and fasteners to ensure they remain tight. Over time, vibrations and movement can cause hardware to loosen. Retighten as necessary to maintain structural integrity.
- Storage: If you need to store the conversion kit, keep it in a dry, temperature-controlled environment away from direct sunlight and extreme humidity to prevent warping or damage to the wood.
7. Troubleshooting
Issue: The toddler rail feels wobbly after assembly.
Solution: Carefully re-check all connection points where the toddler rail attaches to the crib's headboard and footboard. Ensure all bolts are fully tightened. Refer to the assembly steps in this manual and your original crib manual to confirm correct installation and hardware usage. If the issue persists, disassemble and reassemble, ensuring all parts are correctly aligned.
Issue: Parts are missing or appear damaged upon unboxing.
Solution: Do not attempt to assemble or use the product if any parts are missing or damaged. This could compromise the safety and stability of the toddler bed. Immediately contact babyletto customer support for replacement parts or further assistance.
8. Product Specifications
| Feature | Detail |
|---|---|
| Model Number | W4099 |
| Brand | babyletto |
| Manufacturer | DaVinci |
| Color | Honey |
| Material | 100% Sustainable New Zealand Pine Wood, TSCA compliant MDF |
| Product Dimensions (L x W x H) | 54 x 1 x 13 inches |
| Item Weight | 4.4 pounds |
| Certifications | GREENGUARD Gold Certified |
| Compatible Crib | Babyletto Marley 3-in-1 Convertible Crib (W4901) |
| UPC | 048517866290 |
9. Warranty and Customer Support
For detailed warranty information regarding your Babyletto product, please refer to the documentation included with your original Babyletto Marley 3-in-1 Convertible Crib or visit the official babyletto website. Warranty terms and conditions may vary.
If you have any questions, require assistance with assembly, need replacement parts, or encounter any issues not covered in this manual, please contact babyletto customer support directly.
Official Website: www.babyletto.com
Amazon Store: Visit the babyletto Store on Amazon
Please have your model number (W4099) and proof of purchase ready when contacting support.





