Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your LONTAN 18 Inch Undermount Soft Close Drawer Slides. Please read this guide thoroughly before installation to ensure proper function and longevity of the product. These slides are designed for full extension and soft-close functionality, suitable for various cabinet types.
Product Overview and Components
The LONTAN Undermount Soft Close Drawer Slides are engineered for smooth and quiet drawer operation. Key features include full extension, soft-close mechanism, and robust construction.
- Smooth and Quiet Operation: Features a copper hydraulic buffer double-spring structure for reduced noise during closing.
- Full Extension: Allows complete access to drawer contents by extending up to twice its length.
- Easy Removal: The third fold of the slide is detachable for simplified installation and cleaning.
- Durable Construction: Made with high-quality galvanized steel and solid steel balls for stability, smooth movement, and corrosion resistance. Tested for over 150,000 cycles.
- Compatibility: Designed for both face frame and frameless cabinets.

Figure 1: Overview of LONTAN Undermount Soft Close Drawer Slides, including the slide mechanisms, rear mount brackets, and mounting screws.
Key Components:
- Adjustable Locking Device: Secures the drawer to the slides.
- Hook for Fixing Drawer: Provides additional stability for drawer attachment.
- Auto Lock Trigger: Mechanism for secure drawer closure.
- Durable Hydraulic Rod: Essential for the soft-close function.

Figure 2: Detailed view of the adjustable locking device, hook for fixing the drawer, auto lock trigger, and durable hydraulic rod.
Specifications
| Attribute | Value |
|---|---|
| Model Number | SLB316E18 |
| Length | 18 inches (457mm) |
| Load Capacity | 100 LB (45 kg) |
| Extension Type | Full Extension (3-fold) |
| Mounting Type | Undermount / Concealed Bottom Mount |
| Soft Close Feature | Yes |
| Material | Galvanized Steel |
| Maximum Side Panel Thickness | 16mm (5/8") |
| Recommended Cabinet Depth | Approximately 19.06 inches for 18" drawers |
| Clearance between slides and cabinet | 20mm to 40mm |
| Product Dimensions (L x W x H) | 45.72 x 5.08 x 6.5 cm |
| Item Weight | 2.39 kg (per pair) |

Figure 3: Detailed dimensions of the LONTAN 18 Inch Undermount Soft Close Drawer Slide. NL refers to Nominal Slide Length, SKL refers to Drawer Length.
Installation Instructions
Proper installation is critical for the optimal performance of your drawer slides. Please follow these steps carefully.
1. Prepare Your Cabinet and Drawer
- Ensure your cabinet depth is approximately 19.06 inches for 18-inch drawers.
- Verify the drawer side panel thickness does not exceed 16mm (5/8").
- Confirm a clearance of 20mm to 40mm between the slides and the cabinet for a smooth fit.

Figure 4: Illustration of framed and frameless cabinet types and how the drawer slides are compatible with both configurations. The product includes components for both types.

Figure 5: Example of drawer slides installed in a cabinet, demonstrating compatibility with various drawer and cabinet types.
2. Install Cabinet Members
- Separate the inner slide member from the outer slide member by pressing the release lever.
- Attach the outer slide members to the cabinet interior using the provided mounting screws. Ensure they are level and parallel.
- For face frame cabinets, use the included rear mounting brackets to secure the slides at the back of the cabinet.
3. Install Drawer Members
- Attach the inner slide members to the bottom of your drawer box. The third fold of the slide is detachable for easier attachment to the drawer.
- Use the adjustable locking devices to secure the drawer to the inner slide members.
4. Mount the Drawer
- Align the drawer (with inner slide members attached) with the cabinet-mounted outer slide members.
- Gently push the drawer into the cabinet until the slides engage. You should hear a click as the locking devices secure the drawer.
- Test the drawer for smooth operation and soft-close functionality. Adjust if necessary.
Operation
The LONTAN drawer slides are designed for effortless use with two primary functions:
- Full Extension: Pull the drawer completely out to access items at the very back. The slides will extend fully, providing maximum accessibility.
- Soft Close: When closing the drawer, gently push it until the soft-close mechanism engages. The drawer will then slowly and quietly pull itself shut, preventing slamming and reducing noise.

Figure 6: A drawer demonstrating full extension, allowing complete access to its contents.

Figure 7: Illustration emphasizing the quiet operation of the soft-close mechanism, suitable for environments where noise reduction is desired.
Maintenance
To ensure the long-term performance and smooth operation of your LONTAN drawer slides, follow these simple maintenance guidelines:
- Cleaning: Periodically wipe down the slide mechanisms with a clean, damp cloth to remove dust and debris. Avoid using harsh chemicals or abrasive cleaners.
- Lubrication: While the slides are designed for smooth operation, a light application of silicone-based lubricant (avoid oil-based lubricants as they can attract dust) to the moving parts can help maintain optimal performance over time.
- Inspection: Regularly check all mounting screws and brackets to ensure they are tight. Loose fasteners can affect slide performance and stability.
- Drawer Removal for Cleaning: The detachable third fold allows for easy removal of the drawer for thorough cleaning of both the drawer and cabinet interior.

Figure 8: The slides are constructed from high-quality galvanized sheet, which is corrosion-resistant, tough, and durable, minimizing maintenance needs.
Troubleshooting
If you encounter any issues with your drawer slides, refer to the following common problems and solutions:
- Drawer does not close softly:
- Check if the soft-close mechanism is obstructed by debris.
- Ensure the drawer is properly aligned and not binding.
- Verify the hydraulic rod is functioning correctly (refer to Figure 2).
- Drawer is difficult to open or close:
- Inspect for any obstructions within the slide mechanism or drawer path.
- Check if mounting screws are too tight or too loose, causing misalignment.
- Ensure the drawer is not overloaded beyond the 100 LB capacity.
- Drawer does not extend fully:
- Check for obstructions preventing full extension.
- Ensure the slides are correctly installed and not binding.
- Drawer is wobbly or unstable:
- Tighten all mounting screws on both the cabinet and drawer members.
- Verify that the adjustable locking devices are securely engaged.
- Ensure the drawer box itself is structurally sound.
If these steps do not resolve the issue, please contact LONTAN customer support for further assistance.
Warranty and Support
LONTAN is committed to providing high-quality products and excellent customer service. Each package includes detailed installation instructions and our customer-first after-sales service is available to assist with any questions or concerns you may have regarding your drawer slides.
For support, please refer to the contact information provided with your purchase or visit the official LONTAN website.