1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Duravit Happy D.2 Elongated Closed-Front Toilet Seat, model 006459. This product features a soft-close mechanism for quiet operation and a quick-release function for easy cleaning. Please read these instructions carefully before installation and retain them for future reference.
2. Product Overview
Features
- Elongated seat with lid, designed to complement a wide variety of elongated toilet designs.
- Covered under Duravit's 5-year warranty.
- Coordinates with products from the Happy D.2 line seamlessly.
- The soft-close lid forces a gentle descent, ensuring the lid will not slam shut.
- Secure mounting assembly for fast and easy installation.
Package Contents
Verify that all components are present before beginning installation:
- Duravit Happy D.2 Elongated Toilet Seat
- Lid
- Mounting Hardware (bolts, washers, nuts)

Image: The Duravit Happy D.2 Elongated Toilet Seat in Matte Anthracite, showcasing its sleek design.
3. Setup & Installation
Before You Begin
Ensure you have the following tools:
- Adjustable Wrench or Pliers
- Screwdriver (Phillips or Flathead, depending on hardware)
- Soft Cloth for cleaning
Installation Steps
- Remove Old Toilet Seat: If replacing an existing seat, open the bolt covers at the back of the seat. Use a screwdriver to loosen the bolts and remove the old seat. Clean the toilet bowl rim thoroughly.
- Position Mounting Hardware: Insert the new mounting bolts through the holes in the toilet bowl rim. Ensure the rubber washers are positioned correctly under the bolt heads to prevent movement.
- Attach Mounting Plates: From underneath the toilet bowl, thread the nuts onto the bolts. Do not fully tighten yet.
- Attach Toilet Seat: Align the quick-release hinges on the underside of the new toilet seat with the mounting posts. Press down firmly until the seat clicks into place.
- Adjust and Tighten: Close the toilet seat and lid. Adjust the seat position to ensure it is centered and aligned with the toilet bowl. Once aligned, open the seat and fully tighten the nuts from underneath the toilet bowl using a wrench or pliers. Do not overtighten.
- Test Soft-Close: Gently push the lid down and release it to confirm the soft-close mechanism is functioning correctly.

Image: Top-down view illustrating the dimensions of the toilet seat, crucial for compatibility and installation.

Image: Side view illustrating the height and profile dimensions of the toilet seat.

Image: The Duravit Happy D.2 toilet seat installed on a wall-mounted toilet, demonstrating its integrated appearance.
4. Operating Instructions
Soft-Close Function
The Duravit Happy D.2 toilet seat is equipped with a soft-close mechanism. To operate, simply push the seat or lid downwards gently. The mechanism will engage, allowing the seat and lid to close slowly and quietly without slamming. Avoid forcing the seat or lid down, as this can damage the soft-close mechanism over time.
Quick-Release Mechanism
For thorough cleaning, the toilet seat can be easily removed using its quick-release function. Locate the release buttons or levers near the hinges on the underside of the seat. Press or lift these mechanisms to detach the seat from the mounting posts. After cleaning, simply align the seat with the posts and press down until it clicks securely back into place.

Image: The Duravit Happy D.2 toilet seat with the lid open, revealing the interior design and hinge area.
5. Maintenance
Cleaning Instructions
To maintain the appearance and functionality of your Duravit toilet seat, follow these cleaning guidelines:
- Use a soft cloth and mild, non-abrasive cleaning agents.
- Avoid harsh chemicals, abrasive cleaners, scouring pads, or solvents, as these can damage the surface finish and plastic components.
- Regularly clean the hinges and mounting areas, utilizing the quick-release function for access to hard-to-reach spots.
- Rinse thoroughly with clean water after cleaning and dry with a soft cloth.
6. Troubleshooting
Common Issues and Solutions
- Seat is Loose: If the toilet seat feels wobbly, check the mounting nuts underneath the toilet bowl. Tighten them securely with a wrench, ensuring not to overtighten.
- Soft-Close Not Working: If the soft-close mechanism stops functioning, first ensure no obstructions are preventing smooth closure. If the issue persists, the mechanism may be worn or damaged. Contact Duravit customer support for assistance or replacement parts.
- Seat Does Not Stay Attached: Ensure the quick-release hinges are properly aligned with the mounting posts and have clicked into place. Verify that the mounting hardware is securely tightened to the toilet bowl.
7. Specifications
| Attribute | Value |
|---|---|
| Brand | Duravit |
| Model Number | 006459 |
| Color | Matte Anthracite |
| Material | Plastic |
| Style | American |
| Shape | Elongated (As seen on Picture) |
| Product Dimensions | 14.13"L x 16.93"W |
| Item Weight | 5.72 pounds (2.6 Kilograms) |
| Installation Method | Undermount |
| Included Components | Item included Only, Hardware |
8. Warranty & Support
Warranty Information
The Duravit Happy D.2 Elongated Toilet Seat is covered by a 5-year limited warranty from the date of purchase. This warranty covers manufacturing defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims. For full warranty terms and conditions, please refer to the official Duravit website or contact customer support.
Customer Support
For technical assistance, replacement parts, or warranty inquiries, please contact Duravit customer support through their official website or the contact information provided with your product packaging. When contacting support, please have your model number (006459) and proof of purchase readily available.
Additional Resources

Image: QR code for the Duravit WC Seat Finder. Scan to find compatible Duravit toilet seats.
Visit the Duravit WC Seat Finder for assistance in identifying the correct toilet seat for your needs.







