Overview
The Concealed Vertical Lift Sliding Door Hardware Kit is an engineered mechanical counterbalance system designed for overhead wall cabinets, hanging kitchen cabinets, and minimalist residential display cases. Engineered with an internal heavy-duty spiral torsion spring mechanism and precision cable drums housed within a slim top-box casing, this system enables entire cabinet door panels to slide vertically upward and hover at any open position without projecting into the room. Delivering full unobstructed interior cabinet access without the head-clearance hazards of conventional swing-up or hinged doors, it is the premier choice for contemporary European-style kitchens, coffee bars, and luxury custom millwork.

Key Features

• Vertical Parallel Lift Motion: The cabinet front panel slides vertically straight up along concealed side guide rails, completely eliminating forward projection and swing clearance requirements.
• Precision Arbitrary Hover & Free Stop: High-tensile internal torsion spring assembly counterbalances the weight of the door panel, enabling smooth fingertip lifting and holding the door securely at any height.
• Extruded Aluminum Guide Rails (15 kg Capacity): High-precision extruded aluminum tracks with low-friction sliding shoes guarantee whisper-quiet, stable vertical travel without tilting or binding under loads up to 15 kg (33 lbs).
• Concealed Top-Mounted Mechanism Casing: Low-profile counterbalance housing (65 mm depth x 42.7 mm height) installs discretely within the cabinet header, preserving clean internal cabinet shelf space.
• Modular Standard Cabinet Widths (600 mm – 1200 mm): Available in four factory-matched cabinet width configurations:
  • 600 mm Cabinet: 520 mm Track / Mechanism Width (Door Weight: 6 kg – 8 kg)
  • 800 mm Cabinet: 720 mm Track / Mechanism Width (Door Weight: 7 kg – 9 kg)
  • 1000 mm Cabinet: 920 mm Track / Mechanism Width (Door Weight: 8 kg – 11 kg)
  • 1200 mm Cabinet: 1120 mm Track / Mechanism Width (Door Weight: 10 kg – 15 kg)
• Architectural Black Anodized Finish: Premium matte black surface finish integrates seamlessly into contemporary dark, woodgrain, and modern luxury cabinetry.

Technical Specifications

• Product Type: Concealed Vertical Lift Sliding Door Hardware Kit
• Mechanism Type: Overhead Torsion Spring Counterbalance with Side Aluminum Guide Rails
• Materials: Structural Carbon Steel Casing, High-Tensile Torsion Springs, Aircraft-Grade Extruded Aluminum Track
• Finish / Color: Matte Black Anodized / Powder Coated
• Standard Cabinet Height: 807 mm (31.8") standard (Accommodates customizable vertical lift stroke up to 720 mm / 28.3")
• Overlap Slot Dimension: 87.2 mm
• Applicable Door Panel Thickness: 18 mm – 20 mm (3/4")
• Maximum Door Load Capacity: 15 kg (33 lbs)
• Cabinet Width Options: 600 mm, 800 mm, 1000 mm, and 1200 mm (23.6", 31.5", 39.4", 47.2")
• Package Includes: 1x Counterbalance Spring Top Mechanism Box, 2x Vertical Aluminum Guide Tracks (930 mm), 2x Mounting Bracket Sliders, Door Attachment Plates, and Complete Mounting Hardware

Wholesale & OEM Capabilities

• Direct Factory Supply: Precision engineered by Ningbo Dimon for modular kitchen cabinet manufacturers, luxury millwork shops, and architectural hardware distributors.
• Custom Specifications: Customized track lengths, custom spring tension calibrations for ultra-light or heavy glass-framed doors, and bespoke anodized colorways available on wholesale OEM orders.
• Export Packaging: Packed in reinforced, heavy-duty protective inner cartons with custom molded foam inserts to protect precision aluminum extrusions; master cartons palletized and strapped for global transit.