Overview
The Three-Section Full-Extension Synchronous Undermount Drawer Slide Rails with Soft-Close Damping Buffer provide an architectural-grade concealed drawer runner solution engineered for premium residential cabinetry, custom wardrobe drawers, kitchen island casework, and luxury bathroom vanities. Fabricated from heavy-duty galvanized structural steel with advanced mechanical gear-synchronized linkages, the top and intermediate rail sections travel in synchronized lockstep, eliminating the harsh clicking or collision noises typical of non-synchronized slides. Featuring an integrated hydraulic cylinder damper with dual heavy-duty tension springs and tool-free 3D front-locking adjustment handles, it delivers seamless, whisper-quiet gliding and effortless drawer disassembly.

Key Features

• Synchronized Smooth-Glide Linkage: Precision rack-and-pinion synchronization ensures the outer, intermediate, and inner rails move smoothly at identical coordinated speeds, preventing metal rail clatter and sticking throughout opening and closing.
• Concealed Undermount Architecture: Slides mount completely hidden beneath the drawer box, preserving clean wooden drawer sides and showcasing fine cabinet joinery.
• Full-Extension Travel: Three-section telescopic design pulls out 100% of drawer depth, providing unobstructed, total access to items stored in the very back of deep drawers.
• Integrated Hydraulic Soft-Close Damper: High-performance hydraulic piston buffer combined with heavy-duty return springs gently and silently draws the loaded drawer closed, preventing slamming and vibration.
• Tool-Free 3D Locking Clip Disassembly: High-impact polymer quick-release front handles feature integrated micro-adjustment dials for tool-free 3D leveling: Front-to-Back (±3.0 mm) and Left-to-Right (±3.0 mm) alignment, plus one-touch trigger drawer removal.
• Heavy-Gauge Galvanized Carbon Steel: Corrosion-resistant zinc-plated cold-rolled steel construction ensures exceptional structural rigidity, zero sagging under load, and long service life.
• Full Size Range (300 mm – 550 mm): Available in 6 standard nominal lengths: 300 mm (12"), 350 mm (14"), 400 mm (16"), 450 mm (18"), 500 mm (20"), and 550 mm (22").

Technical Specifications

• Product Type: Three-Section Synchronous Concealed Undermount Drawer Slides
• Material: Heavy-Duty Galvanized Cold-Rolled Carbon Steel, High-Strength POM Gears & Bearings, Reinforced Polymer Locking Clips
• Finish: Corrosion-Resistant Electro-Galvanized Zinc (Anti-Rust Protection)
• Extension Type: Three-Section Full-Extension Undermount
• Motion Action: Mechanical Gear Synchronization with Integrated Hydraulic Soft-Close Damper
• Adjustment Range: Front/Rear ±3.0 mm, Left/Right ±3.0 mm (Tool-free rotary dial adjustment)
• Dynamic Load Capacity: Up to 35 kg (77 lbs) per pair
• Available Slide Lengths & Cabinet Depths:
  • 300 mm (11.8"): Fits external cabinet depth ~308 mm / internal depth ~310 mm + drawer front
  • 350 mm (13.8"): Fits external cabinet depth ~358 mm / internal depth ~360 mm + drawer front
  • 400 mm (15.7"): Fits external cabinet depth ~408 mm / internal depth ~410 mm + drawer front
  • 450 mm (17.7"): Fits external cabinet depth ~458 mm / internal depth ~460 mm + drawer front
  • 500 mm (19.7"): Fits external cabinet depth ~508 mm / internal depth ~510 mm + drawer front
  • 550 mm (21.7"): Fits external cabinet depth ~558 mm / internal depth ~560 mm + drawer front
• Drawer Side Thickness Compatibility: Suitable for standard 16 mm (5/8") or 18 mm (3/4") wooden drawer box side panels
• Kit Contents: 1 Pair Undermount Drawer Slides (Left & Right) and 1 Pair Tool-Free 3D Quick-Release Locking Clips
• Applications: Kitchen base cabinets, wardrobe dressers, bathroom vanity drawers, luxury office credenzas, and custom millwork

Wholesale & OEM Capabilities

• Direct Factory Supply: Precision manufactured by Ningbo Dimon for modular cabinet makers, architectural millwork contractors, and kitchen hardware brands.
• OEM Customization: Custom packaging, private-label branding on release clips/tracks, push-to-open (tip-on) damper variants, and bulk palletization.
• Export Packaging: Pairs packed with protective plastic sleeves and clip boxes in reinforced corrugated cartons; 10 pairs per master export carton suited for ocean container shipment.