Carlisle Brass Standard Profile Locks

Carlisle Brass Standard Profile Locks – 3 Lever, 5 Lever & BS3621

Standard profile mortice locks from Carlisle Brass include 3 lever, 5 lever and BS3621 5 lever models designed for timber doors in both domestic and commercial buildings. Choose a deadlock for key-only operation, or a sashlock when a handle-operated latch is required for daily use. The most common UK case sizes of 2.5" and 3" make replacements straightforward.

All Carlisle Brass mortice locks are produced under the EuroSpec brand name, which focuses on the commercial sector. Each lock is stringently tested for performance, safety and durability to ensure compliance with the latest UK and European regulations — making them an ideal choice for both business and homeowners seeking proven quality and reliability. Trade Door Handles is one of the UK’s leading suppliers of architectural ironmongery, trusted by tradespeople, contractors and homeowners nationwide since 1976.

Choose by function

• Deadlock: key-operated bolt only for simple, secure locking.
• Sashlock: spring latch for closing + key-operated deadbolt for added security.

Choose by security level

• 3 Lever: practical for internal doors with moderate security needs.
• 5 Lever: higher resistance to attack for more vulnerable doors.
• BS3621 5 Lever: insurance-approved performance for external timber doors.

Sizes & applications

• 2.5" / 3" cases: the UK’s most common sizes for straightforward swaps.
• Domestic & commercial: ideal for homes, rentals, hospitality, education and healthcare projects.
• Delivery: fulfilled with quick nationwide delivery across the UK.