Anselmi Istar 521 (AN 150 3D) Concealed Hinge 3D Adjustable Matte Chrome 40kg

Product Overview

The Anselmi Istar 521 (AN 150 3D) concealed hinge is engineered for flush wooden doors, offering a completely hidden solution once the door is closed and aligned with the frame. This Italian hinge is suitable for fire-rated door assemblies and complies with minimum door thickness requirements of 35 mm, supporting installation in both residential and commercial interiors where aesthetic and technical requirements are paramount.

Its standout feature is precision 3D adjustability ? vertical, horizontal, and compression axes ? providing installers with granular control over alignment while minimizing the need for repeated future adjustments. This capability is valued by facilities managers and door manufacturers seeking long-term stability and clean visual integration. Particularly suited for premium fitouts and OEM projects where flush doors and invisible hardware are specified.

Key Features

• Fully concealed design ? invisible when door is closed for high-end visual integration


• 3D adjustment ? vertical (-2.5 mm/+2.5 mm), horizontal (-1.5 mm/+1.5 mm), compression (-1 mm/+1 mm)


• Universal handing ? suitable for left or right-opening doors


• Supports fire-rated doors ? compatible with fire safety requirements


• Load capacity ? 40 kg with two hinges, 60 kg with three hinges per door


• Minimum door thickness ? compatible with doors from 35 mm


• Zamak construction ? robust, corrosion-resistant alloy for long durability

Technical Specifications

• Hinge Height: 110 mm


• Wing Width: 24 mm


• Depth: 21 mm / 25.55 mm


• Adjustment Range, Vertical: -2.5 mm to +2.5 mm


• Adjustment Range, Horizontal: -1.5 mm to +1.5 mm


• Adjustment Range, Compression: -1 mm to +1 mm


• Maximum Opening Angle: 180°


• Load Capacity: 40 kg (2 hinges), 60 kg (3 hinges)


• Minimum Door Thickness: 35 mm


• Material: Zamak alloy


• Finish: Matte chrome


• Handing: Universal

Applications

Applied in flush wooden doors for residential apartments, office spaces, hospitality venues, and commercial interiors requiring invisible hardware. Suitable for fire-rated and architect-specified premium doors, especially in OEM manufacturing, bespoke joinery, or high-end renovation projects. Ideal where discreet hardware and precise door alignment is considered essential.

Packaging & Shipping

Standard export packaging. Each unit includes the hinge, screw covers, and complete installation hardware. Instructions for adjustment and mounting are enclosed. Bulk packaging options available for OEM orders.