What is a standard profile lever lock door handle?

A lever handle on a rectangular backplate with a traditional mortice keyhole. It pairs with British mortice sash locks using the UK-standard 57 mm centre measurement between spindle and keyhole.

Are these Carlisle Brass handles suitable for external doors?

Yes. Fit with an appropriate 3- or 5-lever mortice sash lock for external doors. They are also commonly used on internal doors where additional privacy or security is preferred.

Which locks are compatible (2, 3 or 5 lever)?

Handles in this collection are compatible with British 2-, 3- and 5-lever mortice sash locks with 57 mm centres. Choose the lock’s security level to suit the door location and usage.

How do standard profile handles differ from euro profile or bathroom sets?

Standard profile uses a mortice keyhole. Euro profile has an aperture for a euro cylinder. Bathroom variants use a turn-and-release mechanism rather than a keyhole.

Which Carlisle Brass sub-brands offer lever lock backplates?

EuroSpec for commercial specification, Serozzetta for contemporary designs, Ludlow Foundries for traditional and cottage styles, and Manital for Italian design and ergonomics.

What finishes are available?

Popular finishes include Polished Chrome, Satin Chrome, Polished Brass, Antique Brass, Matt Black and Nickel, with stainless steel and aluminium looks for more robust or high-traffic settings.

Carlisle Brass Lever Lock Door Handles on Backplate – Standard Profile

Standard Profile Lever Lock Backplates by Carlisle Brass

Supplied by Trade Door Handles, trusted UK supplier of architectural ironmongery since 1976, with nationwide next-day delivery.

Traditional keyhole handles for British mortice sash locks (2, 3 & 5 lever)

Discover Carlisle Brass lever lock door handles on backplate (standard profile), designed around the UK-standard 57 mm centres (spindle to keyhole) for straightforward pairing with 2-, 3- and 5-lever mortice sash locks. Established in 1986 and based in Carlisle, Carlisle Brass is a leading UK brand for architectural ironmongery across homes, hospitality, education and commercial projects.

Where they’re used & quick considerations

Ideal for external doors with 3- or 5-lever security and internal rooms where added privacy is preferred.
Compatible with wooden doors; supplied in pairs with screws and spindle (lock purchased separately).
Need euro cylinder or bathroom privacy? See the related Carlisle Brass backplate ranges below.

Related ranges & site pillars

Related Carlisle Brass backplates: Std. Lock on Backplate, Euro Lock on Backplate, Oval/Bathroom Backplates, Multipoint Door Handles.

Browse site pillars: Architectural Ironmongery, Door Furniture, Window Furniture, Kitchen & Cabinet Hardware, Architectural Accessories, Hinges, Locks & Latches.

What else you’ll need

Pair these backplates with a compatible mortice lock: Mortice Key Sash Locks.

Available for quick delivery to London, Manchester, Birmingham and across the UK. If you can’t find what you’re looking for, please contact us.

Carlisle Brass Locking Door Handles on a backplate Polished Chrome SZM034SC

Standard profile lever lock backplates — UK compatibility & styles

57 mm centres • Mortice sash lock pairing • design choices

Standard profile lever lock backplates are built around the trusted UK standard of 57 mm centres, ensuring simple replacement or upgrades on internal and external timber doors. These handles create a traditional keyhole look suited to both modern homes and period properties. They can be paired with 2-lever mortice locks for basic privacy, 3-lever for secure internal doors, and 5-lever for enhanced external security.

Design options span square or rounded backplates, sculpted or straight levers, and a wide range of finishes: polished chrome, satin chrome, polished brass, antique brass, matt black, nickel, stainless steel and aluminium. These choices mean Carlisle Brass lever lock handles can match everything from contemporary interiors to heritage renovations.

The Carlisle Brass family of sub-brands adds further variety: EuroSpec delivers commercial-grade durability, Serozzetta offers slim contemporary lines, Ludlow Foundries focuses on rustic and period styling, while Manital provides Italian design and ergonomic appeal.

If you’re comparing profiles, standard profile backplates use a traditional mortice keyhole, while Euro profile handles feature a cut-out for a cylinder lock, and bathroom handles include a turn-and-release. Together, these collections provide solutions for every type of door security hardware.

Explore related hardware & Carlisle Brass collections

Matching ranges and key categories across Trade Door Handles

To complete your project, we recommend exploring the wider range of categories available at Trade Door Handles. Our Architectural Ironmongery collection covers fittings for doors, windows and cabinets, while Door Furniture brings together handles, knobs and matching backplates in every finish. For a consistent look across the home, you’ll also find Window Furniture, alongside Kitchen & Cabinet Hardware for cupboards and drawers.

Extra detail can be added with Architectural Accessories, while Hinges and Locks & Latches ensure long-term performance and security.

Every locking door handle in this range has a matching latch version and a bathroom option, allowing you to carry the same style throughout the property. For internal passage doors, see the Carlisle Brass Latch Handles. For bathrooms, en-suites and downstairs toilets, explore the Carlisle Brass Bathroom Handles.

Within the Carlisle Brass brand, there are also related collections worth considering: Euro Lock on Backplate for cylinder locks, Oval Backplates for privacy doors, Multipoint Door Handles for uPVC and composite doors, or Door Handles on Rose for a more contemporary mounting style. Complementary ranges such as Carlisle Brass Hinges, Carlisle Brass Locks & Latches and Mortice Key Sash Locks complete the installation.

UK expertise, guidance and delivery you can rely on

Since 1976 — advice for homes, trades and commercial projects

Trade Door Handles has supported homeowners, tradespeople, interior designers and contractors nationwide for nearly five decades. Visit our Kendal showroom for expert guidance on British Standard lever lock backplates and compatible mortice sash locks.

We work closely with trusted brands: From The Anvil for traditional handmade ironmongery, Carlisle Brass for one of the UK’s largest hardware ranges, Heritage Brass for timeless finishes, and Frelan Hardware for contemporary solutions.

Nationwide next-day delivery is available across the UK, including London, Manchester, Birmingham, Cumbria and beyond.