The OTLAV Invisacta is a fully concealed 3D adjustable hinge for flush interior doors. Made in Italy, the Invisacta line features a patented 21 mm frame-side depth that eliminates the need to cut the architrave, allowing flush-mounted trim. The hinge mounts in the centre of the door thickness, making the door fully reversible for left or right hand installation. All Invisacta hinges operate on 7 junction fulcrums with high-resistance nylon bushings, producing smooth movement with no sliding wear. Clamping screws are isolated from adjustment screws, so fasteners remain stable over time. Available in 60 kg and 80 kg load capacities to suit standard and heavier residential doors. Specifications Hinge Height: 120 mm Width — Door Side: 30 mm Width — Frame Side: 30 mm Depth — Door Side: 30 mm Depth — Frame Side: 21 mm (patented) Milling: 30 × 120 mm Door Gap: 18–20 mm Opening Angle: 180° 3D Adjustment: Side ±1 mm, height ±2 mm, depth ±1 mm Adjustment Tool: 3 mm hex key Reversible: Yes — when mounted at centre of door thickness Compatible: Door closing devices Note: Aluminium caps sold separately to conceal mounting screws IN300 — 60 kg: CE certified, fireproof rated 30 minutes (UNI-EN 1634-2). IN303 — 80 kg: CE certified, UL listed (F-90), fireproof rated 45 minutes (UNI-EN 1634-1). Aluminium levers, zamak casing. Load capacities tested with 90 × 210 cm doors. For doors of other sizes, refer to the OTLAV load specifications in the Product Downloads section. Installation The Invisacta uses a single milling slot per hinge on both the door and frame. During installation, the frame-side height adjustment can be unlocked to create a 4 mm gap, making it easier to align and insert the hinge when frame and door millings are not perfectly matched. Router templates and jigs are sold separately. Materials Made in Italy. Available in 7 standard finishes; additional finishes including bronze, dark titanium, and gold available on request. Finishes Satin Chrome Polished Chrome Satin Nickel Satin Brass Polished Brass White (RAL 9016) Black Product Downloads IN300 (60 kg) OTLAV 300 Specification Sheet (PDF) OTLAV 300 Technical Drawing (PDF) OTLAV 300 Load Specification (PDF) OTLAV 300 Installation Instructions (PDF) IN303 (80 kg) OTLAV 303 Specification Sheet (PDF) OTLAV 303 Technical Drawing (PDF) OTLAV 303 Load Specification (PDF) OTLAV 303 Installation Instructions (PDF)
