Everything You Need to Know About Lever Handle Sets: Types, Dimensions, and Latching Mechanisms Explained

A lever handle set consists of the lever handles on both sides of the door, along with the corresponding door escutcheons or door plates, the square spindle, and the mounting hardware. Depending on the door and its intended use, different types are available: for example, BB sets for classic Room doors, WC sets for bathrooms, or alternate sets for house and apartment entrance doors. This guide explains the differences and shows which measurements you should check before making a purchase.

What we usually call a “door handle” in everyday life is only one part of the Lever handle set and is actually called a “Lever handle” or “door handle”: By operating it, we can open and close a door. When the Lever handle is operated, the square spindle inside the lock turns. This retracts the Latchbolt, allowing the door to open. If the door is also locked, the key or the WC lock moves the separate deadbolt.

A classic Lever handle set includes:

• two Lever handles for both sides of the door,
• a square spindle that connects the handles to the lock,
• two handle escutcheons or a pair of door plates,
• depending on the type of locking, escutcheons, profile cylinder escutcheons, or a WC latch,
• a mounting bracket and the necessary mounting screws.

The individual components must be compatible with the door thickness, lock, square spindle size, and drilling pattern.

First of all, according to the shape distinguish the shield and rosette sets.

From the structure of a handle set, it follows how it must be mounted: If the door has a lock and keyhole, insert the square lever handle pin into one of the two lever handles (pin part) and push it through the lock. From the opposite side, press the other lever handle against it (hole part). Once both lever handles have been fixed in the door in this way, plates or rosettes can be attached.

Lever handle sets are often made of stainless steel, aluminium, brass, die-cast zinc, or plastic. In addition, coatings and surface finishes determine their appearance and durability.

• Stainless steel: durable, easy to maintain, and suitable for many residential and commercial applications
• Aluminium: lightweight and available in a wide range of colors
• Brass: offers warm metallic tones and classic designs
• Die-cast zinc: allows for complex forms and various coatings
• Plastic: cost-effective, but less durable depending on quality

In contrast, terms such as “matt,” “polished,” “powder-coated,” or “PVD-finished” refer to the respective finish and not necessarily to the base material.

Of course, you should like your new lever handle set first and foremost. In addition to aesthetics, other factors play a role in the purchasing decision: durability, fire resistance, personal safety, burglar resistance and corrosion resistance all play a role - depending on where the lever handle set is used. These properties are categorized in the "DIN EN 1906" standard. In general, the higher the class number in a category, the better the performance of the handle set. For example, a handle set in corrosion resistance class 1 is only slightly resistant to corrosion and one in class 5 is extremely resistant to corrosion. The lowest class is generally sufficient for normal room doors. However, if you wish to purchase lever handle sets for buildings with a risk of fire, burglary, corrosion or heavy public traffic, you should look for correspondingly higher class numbers in accordance with DIN EN 1906.

We use lever handle sets many times a day. This is why they can wear out over the years and the lever handles can sag slightly due to gravity. To prevent this, special hold-up springs are installed - also known as return springs. Thanks to them, the lever handles always spring back up again. So when buying, make sure that a hold-open spring is installed.

One aspect that deserves particular attention when considering lever handle sets is the ergonomics and feel of the door handles. As door handles are used many times a day, comfort when gripping them plays a decisive role. Innovative designs, such as the TRI 134 model from Griffwerk, take into account the natural shape of the hand and offer a particularly pleasant grip thanks to a three-sided handle profile. Such ergonomically designed handles adapt to the shape of the hand and enable intuitive operation, which not only increases comfort but also improves user-friendliness. In addition, high-quality materials and surface finishes, such as Griffwerk's soft2touch technology, contribute to a pleasant feel and give the door handle a velvety surface that is both visually and tactilely appealing. When selecting a handle set, it is therefore important to consider not only the design and material, but also the ergonomic aspects and feel to ensure a harmonious combination of functionality and aesthetics.

• First, remove dust and loose dirt with a soft cloth. Then clean the surface with a slightly damp cloth and a mild, pH-neutral cleaner.
• Avoid abrasive sponges and cleaning agents containing chlorine, acids, or solvents. If a finish needs to be disinfected, use only a product approved by the manufacturer for this purpose, and follow the recommended contact time and dosage.

Which questions are most frequently asked about lever handle sets? We found out using software that analyses which questions people ask voice assistants from Apple, Google and others. We answer three of them here:

There are very different ones, all of which Griffwerk has in its range: Rosette sets, shield sets, interchangeable sets, half sets and renovation plates. All handle sets are available in a wide variety of shapes and materials - whether stainless steel, aluminium or brass.

DIN EN 1906 applies specifically to lever handles and doorknobs. It classifies fittings based on factors such as intended use, endurance, security, and corrosion resistance. Not every fitting set is automatically suitable for every door. For fire and smoke protection doors, hardware and fasteners specifically approved for this purpose must be used.

This stands for Buntbart set. The buntbart key is the typical key shape for interior flat doors.

DIN EN 1906 classifies lever handles and knobs based on several characteristics, including usage category, endurance, door dimensions, fire resistance, security, and corrosion resistance. What matters is not a single number that is as high as possible, but rather a classification appropriate for the intended application. For fire and smoke protection doors, the following also applies: The approval of the entire system (e.g., according to DIN 18273) is decisive; None of the hardware set, fasteners, or substructure may be interchanged at will—otherwise, the system approval becomes invalid. For installation, through-bolts with load-distributing washers are often required; the specified tightening torques must be observed to prevent deformation of the Lock case.

For material and surface combinations, the pairing determines durability and appearance. Avoid contact corrosion: Different metals (e.g., Aluminium ↔ Stainless steel) should be isolated from one another; Stainless steel (e.g., 1.4301/1.4404) provides a robust base, while PVD finishes increase scratch and abrasion resistance in high-traffic areas. In coastal and wellness environments, stainless steel with enhanced corrosion resistance is recommended; in medical and public areas, finishes resistant to disinfectants are advisable. Also pay attention to the feel and ergonomic design of the handles (softly rounded edges, sufficient recess from the door surface) so that the hardware set can be gripped securely even with wet hands. If existing drill patterns need to be concealed, long backplates provide a clean, covering appearance; rosettes have a more minimalist look but require a precisely matching drill pattern.

To maintain the product’s value over time, we recommend a brief, predictable maintenance routine: After 4–6 weeks (settling-in period), retighten all screws in a crisscross pattern and check the handle’s return; thereafter, inspect annually (substructure, retaining springs, play in the Square). Clean finishes with a slightly damp cloth using a mild, pH-neutral cleaner and dry them afterward; avoid abrasive, chlorine- or acid-based cleaners as well as aggressive glass cleaners. For commercial installations, establish a cleaning and disinfection schedule if necessary (follow the manufacturer’s compatibility list). In high-traffic areas, magnetic catches and hinge buffers reduce closing noise and protect the fittings and frame. Document serial/article numbers, surface designations, and Installation instructions in a centralized location—this speeds up spare part orders (rosettes, screws, substructures) and ensures the approval chain remains traceable in the event of service calls.

1. Door & use: room door, apartment entrance, property? → Clarify requirements for permanent function/protection.
2. Design:Rosette or escutcheon; BB/PZ/WC or change/half depending on lock/cylinder.
3. Standards: Pay attention to DIN EN 1906 (usage categories, corrosion, etc.) and any other protection/fire protection standards for the intended use.
4. Technology:Hold-up spring (return spring) to prevent "hanging down", precise bearing for smooth operation.
5. Material & finish: Stainless steel/chrome/aluminum, black, grey, brass look - select to match the doors/profiles in the building.

• Hold-up springs: Pushers are perfectly horizontal - no "sagging".
• Precise bearing/substructure: backlash-free fit, smooth return, durable.
• Ergonomics (e.g. three-sided handle profile) & soft2touch surfaces: better feel, less "cold".