Scandinavian standard
The most common lock case in interior doors in private homes, e.g. ASSA 2014. The c/c distance is 30 mm, and the door can be locked either with a key or with a thumb turn.
Modular lock case
Lock cases used in public buildings, e.g. ASSA 565 or ASSA 310. The c/c distance is 30 mm and the handle is usually positioned below the lock. The door can be locked either with a cylinder lock or with a thumb turn.
European standard
With the European standard, the c/c distance is 38 mm and the screws are positioned horizontally, for both handle and thumb turn.

Toilet Indicator OneN is a thumb turn from Danish brand d line and matches the Lever Handle OneN door handle. It sits on a round rosette with a 50 mm diameter, fits doors 33–59 mm thick and is available in the Steel finish. It comes for Scandinavian standard, European standard and modular locks – choose the lock type under Model.
The thumb turn is made of AISI 316 – an acid-resistant, marine-grade stainless steel that resists corrosion and handles intensive daily use in homes and public buildings alike. Every detail is tested for seamless function and a long life, and each piece is finished by hand. d line provides a 20-year guarantee (5 years on coated finishes).
Characteristics
Colour: Steel
Material: Stainless steel (AISI 316)
Fits door thickness: 33–59 mm
Rosette diameter: 50 mm
Guarantee: 20 years (5 years for coated products)
Brand: d line
Mounting
Delivery
Stock items such as handles, toilet knobs and door stops are handled immediately after ordering and are normally delivered within 1-3 working days to the nearest delivery point. The products are usually sent with DHL and a notification via SMS or email is sent with information about where and when the package can be collected.
Documents
Re-handle®
Since 15 May 2023, d line has been taking back selected original products for refurbishment. d line repairs, replaces and brushes them so they work like new. With each Re-handle®, we save the environment up to 90% of CO2 emissions.
Low quality is a waste of resources. d line challenges you to use Re-handle® on the same product up to four times. With each Re-handle®, the 20-year product guarantee is renewed, ensuring 100 years of use. With a Re-handled product costing 60% less than a newly made one, it is easy to make the sustainable choice and reuse instead of buying new.
The service is available for all products in the shop that carry the Re-handle® logo. Read more about how it works here.

d line
d line is a leading Danish design brand specialising in durable architectural hardware. The company was founded when the Danish designer Knud Holscher needed high-quality stainless architectural products and started designing them himself. In 1971 the first products were launched as d line, including two handles.
Today it is a complete supplier of interior hardware, using high-quality AISI 316 stainless steel, known for its durability.
Today it makes products drawn by world-leading designers such as Arne Jacobsen, Tom Dixon and Bjarke Ingels Group.