Hidden Limits: Introducing the Sugatsune SAS-V Concealed Door Restrictor

Sugatsune has long been recognised for combining functionality with refined, minimalist design, and the SAS V concealed door restrictor continues this philosophy. Designed for modern interiors, the SAS V focuses on delivering precise door control while maintaining a clean, unobtrusive appearance.

 Its core purpose is simple yet essential: to limit how far a door can open, helping to prevent damage to surrounding walls, furniture, and fittings, as well as reducing the risk of accidents.

What sets the SAS‑V apart is its concealed design. When the door is closed, the mechanism remains hidden, preserving the visual integrity of the space. This makes it particularly attractive for architects and designers who prioritise seamless, clutter‑free environments. Despite its discreet profile, the restrictor offers impressive functionality, including an adjustable opening angle of up to 110 degrees.

This adjustment is achieved through a simple sliding mechanism, allowing flexibility even after installation.

Installation has also been designed with convenience in mind. The system requires only a slim mortised groove at the top of the door, while the arm is attached to the frame and ceiling. Its non‑handed configuration means it can be fitted to both left‑ and right‑hand doors, simplifying specification and installation processes.

The SAS‑V range includes both hold and non‑hold options. Hold models keep the door open at a chosen angle, whereas non‑hold versions simply restrict further movement. With multiple sizes and finishes—white, black, and warm grey—the product can blend effortlessly into different interior styles.

Durability is another key strength. Built from precision‑engineered stainless steel, the SAS‑V has undergone rigorous testing, completing up to 300,000 open‑and‑close cycles. This ensures long‑term reliability in both residential and commercial settings, supporting doors up to 50 kg in weight.

Finally, the SAS‑V integrates seamlessly with other Sugatsune components, such as concealed hinges and soft‑close dampers, enabling enhanced control and smoother operation. By combining flexibility, durability, and elegant design, the SAS‑V provides a sophisticated solution for managing door movement without compromising on aesthetics.