Polsoft ESTETIC W978/A Invisible Hinge 3D Adjustable Matte Black RAL 9005 Universal

Product Overview

The Polsoft ESTETIC W978/A invisible hinge, finished in matte black (RAL 9005), is used for flush wooden interior doors. Its concealed installation allows the door to form a continuous, planar surface with the frame when closed, which is especially valued in modern residential, office, and hospitality projects seeking a seamless aesthetic. The design accommodates universal use, with full compatibility for left- or right-handed doors.

A key technical differentiator for this hinge is its 3D adjustability ? vertical, horizontal, and pressure adjustments can all be made externally without removing the door leaf. This simplifies post-installation alignment and eliminates the risk of damaging door surfaces during maintenance. Such adjustability is a significant advantage for contractors, carpenters, and OEM door manufacturers managing variable site tolerances or frequent design changes, particularly in premium interior fit-outs.

Key Features

• 3D adjustability ? vertical (0-3 mm), horizontal (-0.75 mm to +0.75 mm), and pressure (-1.5 mm to +1.5 mm) via external adjustment screws


• Invisible installation ? hinge completely hidden in closed position for high-end visual integration


• 180° opening angle ? allows full door access and flush alignment with adjacent walls


• No lubrication required ? maintenance-free operation throughout the service life


• Universal application ? fits both left- and right-handed wooden flush doors


• High load capacity ? supports up to 42 kg (2 hinges), 48 kg (3 hinges), or 53 kg (4 hinges) per door set

Technical Specifications

• Adjustment: 3D (vertical 0-3 mm, horizontal -0.75 to +0.75 mm, pressure -1.5 to +1.5 mm)


• Maximum Opening Angle: 180°


• Finish: Matte black (RAL 9005)


• Compatible Door Type: Wooden, flush (bezprzylgowe)


• Load Capacity: 42 kg (2 hinges), 48 kg (3 hinges), 53 kg (4 hinges) for 2000 x 800 mm door


• Maintenance: Lubrication not required


• Universal: Left- or right-hand door installation

Applications

Typically used in modern residential, office, and hotel interiors where flush wooden doors and concealed hardware are required. Ideal for premium architectural projects, OEM wooden door manufacturing, and renovation contracts seeking a seamless, high-end visual effect with full 180° door opening. Suitable for doors where post-installation alignment and low maintenance are priorities.

Packaging & Shipping

Standard export packaging. Unit includes one hinge in matte black finish, external adjustment hardware, and installation instructions.