155 Degree Concealed Hinge for Wide-Opening Overlay Doors

This Grass Tiomos concealed hinge is built for full overlay doors that need a wide, near-flat swing, with integrated soft-close and dowel mounting on both face-frame and frameless cabinets.

Key Features

• 155 degree opening swings the door nearly flat for maximum interior access and clearance.
• Integrated soft-close damps the door over the final closing arc so it settles quietly every time.
• Full overlay straight arm positions the door to cover nearly the entire cabinet side.
• Dowel mount cup presses into pre-bored dowel holes for a fast, screw-free door-side install.
• 42mm bore pattern matches Grass Tiomos boring, distinct from the 45mm pattern used by other brands.
• Three-way adjustment dials in height, side, and depth after hanging for a consistent reveal.

Where the Wide Arc Earns Its Place

Most concealed hinges stop at 110 degrees, which covers everyday access just fine. The 155 degree swing is the right call when a door opening to 110 degrees would block an adjacent appliance, limit corner access, or leave an undermount sink cabinet hard to reach from the side. At 155 degrees the door clears to nearly flat, so the interior is fully open and objects on the cabinet side can pass without the door getting in the way. This is the widest angle in the Tiomos line that still carries integrated soft-close, so the door settles quietly even as it swings further than a standard hinge allows.

The hinge fits doors up to 32mm thick, which covers solid wood, thick MDF, and built-up door profiles that exceed the standard 16 to 22mm window. The 35mm cup bores into the door and the arm connects to a Tiomos base plate mounted to the cabinet, ordered separately. That plate is Grass-specific: Tiomos hinges and plates engage with Grass's own snap-on geometry, which is not shared with other brands.

Steel, Nickel, and a Bore Pattern to Match

The hinge body is steel in a nickel finish. The 42mm boring pattern is the Tiomos standard and differs from the 45mm spacing common to other European concealed lines, so it matters for replacements: measure the existing bore centers before ordering. For new installations the Tiomos pattern drills consistently once set up in the machine, and the dowel mount on the door side eliminates the cup screw step entirely by pressing directly into pre-bored dowel holes. Three-way adjustment of plus or minus a few millimeters in each direction handles the small variations that come up after a full run of doors is hung.

Suited to Demanding Installs

Reach for this hinge on corner cabinets, appliance garages, pantry pull-outs, and any run where access depth matters and a standard swing would frustrate the user. It works on frameless and face-frame boxes alike. Cabinet shops building to spec for kitchen designers who require wide clearance will find the 155 degree angle a practical answer without giving up the soft-close damping their clients expect. Contractors retrofitting existing face-frame cabinets with thicker doors will appreciate the 32mm thickness ceiling and the dowel mount speed. Because the base plate is sold separately, order the matching Grass Tiomos plate for the cabinet construction and overlay you are working with.

Common Questions

Maximum Access Without Giving Up a Quiet Close

This hinge is the choice when the design demands both a wide door swing and the damped, quiet close that finish-level cabinetry expects, on doors up to 32mm thick, in either frameless or face-frame construction.