Concealed Hinge For Wide-Swing Full Overlay Doors

This Grass Tiomos concealed hinge brings a 120 degree opening angle to full overlay doors on both face-frame and frameless cabinets, with a self-close spring and dowel mounting built for CNC and production environments.

Key Features

• 120 degree opening swings the door wider than the standard 110 degree angle, improving access in tighter spaces.
• Full overlay straight arm positions the door to cover nearly the entire cabinet side, leaving only a narrow reveal.
• Self-close spring pulls the door shut over the last few degrees of travel.
• Dowel mount presses the cup into pre-bored dowel holes without cup screws, designed for CNC production workflows.
• Three-way adjustment dials in height, side, and depth after the door is hung.
• Works on face-frame and frameless cabinets when paired with the matching Grass Tiomos base plate.

Where the Extra Swing Earns Its Place

The 120 degree opening is the reason to choose this hinge over the standard 110 degree version. Ten degrees may sound modest, but on cabinets flanked by appliances, corner runs, or adjacent walls, the wider swing changes how far a door clears the opening and how easily a hand reaches inside. It suits tall pantry doors, appliance-garage doors that need to move clear of adjacent countertop equipment, and any run where a little more clearance improves daily use. The full overlay arm covers nearly the full cabinet side when the door is closed, so the reveal stays tight and consistent across the run.

The 35mm cup bores into the back of the door at a 12.6mm depth. The hinge arm then connects to a Grass Tiomos base plate mounted to the cabinet, ordered separately. Plates are specific to the Tiomos system; plates from other brands will not connect to this hinge.

Steel Build and Dowel Mounting

The hinge is steel with a nickel finish. Its maximum door thickness is 24mm, so it handles doors slightly beyond the standard 16 to 22mm range without moving to a dedicated thick-door hinge. The dowel mount is the detail that matters in a production shop: the cup carries pre-attached dowels that press into bored holes in the door, so cup screws are not part of the install sequence. That shaves time across a full run of doors. The Grass Tiomos boring pattern is 42mm, not the 45mm spacing common to other brands, so confirm that figure when ordering replacement hinges or planning boring programs.

Right Fit for Production and Custom Work

This hinge fits cabinet shops and millwork operations running CNC boring equipment that want a consistent, repeatable install on full overlay doors. It is equally at home on a face-frame or frameless box, which keeps it versatile across a mixed production run. The self-close spring closes doors automatically, the right choice for projects where a quiet-open, positive-close result is specified but a damped soft-close is not required or budgeted. For a damped close on the same Tiomos platform, the integrated soft-close version of this hinge is the direct substitute.

Common Questions

More Clearance, Cleaner Production

Specify this hinge when the job calls for full overlay doors that swing wide, close on their own, and install quickly in a dowel-bored production workflow.