1. Introduction
This manual provides comprehensive instructions for the installation, operation, maintenance, and troubleshooting of your Duravit D-Code Compact Soft-Close Toilet Seat, model D-Code 673900. Please read these instructions carefully before installation and retain them for future reference.
The Duravit D-Code Compact toilet seat is designed for specific Duravit D-Code ceramic series WCs, offering a space-saving solution with its shortened projection. It features a soft-closing mechanism for quiet operation and is constructed from durable urea thermoset material with stainless steel hinges.

Image 1.1: Duravit D-Code Compact Soft-Close Toilet Seat in closed position.
2. Safety Information
Observe the following safety guidelines during installation and use:
- Always ensure the toilet seat is securely fastened to prevent movement and potential injury.
- Do not stand on the toilet seat or lid. It is not designed to support full body weight.
- Keep small children away from the toilet seat during installation to prevent access to small parts.
- Use appropriate tools for installation and follow all steps carefully.
- Avoid using abrasive cleaners or harsh chemicals, as these can damage the surface of the toilet seat and hinges.
3. Package Contents
Verify that all components are present before beginning installation:
- Duravit D-Code Compact Toilet Seat with Cover
- Fixing Material (Hinges, screws, washers, nuts)
- Installation Instructions (This manual)
- Care Instructions
4. Setup (Installation)
The Duravit D-Code Compact toilet seat is designed for quick and easy installation from below. Ensure your WC is compatible with the dimensions provided.

Image 4.1: Dimensional drawing of the Duravit D-Code Compact toilet seat (measurements in mm).
Installation Steps:
- Prepare the WC: Ensure the toilet bowl is clean and dry where the seat will be mounted. Remove any old toilet seat and hardware.
- Position the Hinges: Insert the hinge posts into the mounting holes on the toilet bowl. The stainless steel hinges are designed for durability.
- Secure from Below: From underneath the toilet bowl, attach the washers and nuts to the hinge posts. Tighten them securely, but do not overtighten, to avoid damaging the ceramic.
- Attach the Seat: Align the toilet seat with the hinge posts and press down firmly until it clicks into place. Some models may require screwing the seat onto the hinges.
- Test Stability: Gently try to move the seat to ensure it is firmly attached and does not wobble. Adjust tightness if necessary.

Image 4.2: Duravit D-Code Compact toilet seat correctly installed.
5. Operating (Usage)
Your Duravit D-Code Compact toilet seat features a soft-closing mechanism for enhanced comfort and durability.
Soft-Close Mechanism:
- To close the seat or lid, simply push it down gently. The integrated soft-close mechanism will engage, allowing the seat and lid to lower slowly and silently without slamming.
- Avoid forcing the seat or lid down, as this can damage the soft-close mechanism over time.
6. Maintenance
Proper care and maintenance will ensure the longevity and appearance of your Duravit toilet seat.
Cleaning Instructions:
- The toilet seat is made of high-quality urea thermoset, which is durable, easy-care, dust-, water-, and dirt-repellent, antistatic, and UV light-resistant.
- Clean the seat and lid regularly with a soft cloth and mild, non-abrasive cleaning agents.
- Do not use harsh chemicals, abrasive pads, or scouring powders, as these can scratch the surface or damage the material.
- For the stainless steel hinges, wipe with a damp cloth and dry thoroughly to prevent water spots.
- Ensure no cleaning agents come into contact with the soft-close mechanism, as this could impair its function.
7. Troubleshooting
If you encounter issues with your toilet seat, refer to the following common problems and solutions:
- Seat is Loose: Check the mounting nuts underneath the toilet bowl. Tighten them securely, ensuring not to overtighten.
- Soft-Close Mechanism Not Working Properly: Ensure the hinges are clean and free from debris. Avoid forcing the lid or seat down, as this can strain the mechanism. If the issue persists, contact customer support.
- Seat Does Not Fit: Verify that your toilet bowl is a Duravit D-Code ceramic series, Compact version. Refer to the dimensions provided in Section 4 and compare them with your WC.
8. Specifications
| Feature | Detail |
|---|---|
| Brand | Duravit |
| Model | D-Code 673900 |
| Part Number | 67390099 |
| Material | Urea Thermoset (Plastic) |
| Style | With soft-close mechanism |
| Color | White |
| Product Dimensions (L x W) | 14.13" x 17.44" (approx. 35.9 cm x 44.3 cm) |
| Item Weight | 4.18 pounds (1.9 kg) |
| Hinge Material | Stainless Steel |
| GTIN | 04021534966293 |
9. Warranty and Support
Your Duravit D-Code Compact Soft-Close Toilet Seat is backed by a five-year manufacturer's warranty. This warranty covers defects in material and workmanship, ensuring a long service life for your product.
For warranty claims, technical assistance, or further inquiries, please contact Duravit customer support through their official website or the retailer from whom you purchased the product. Please have your model number (D-Code 673900) and proof of purchase available.





