BRITON FIRE RATED MORTICE LOCKCASE
Briton lockcases refer to the internal bodies of mortice locks—used in commercial and institutional doors. Offering excellent reliability and security, Briton mortice lockcases can withstand high usage making them ideal for buildings in domestic or public settings with heavy footfall. Our comprehensive range of cylinder mortice locks includes deadlocks, sashlocks, bathroom locks, latches and nightlatches to suit all requirements. Key series include:
- 5400-series: Euro-profile commercial lockcases such as sashlocks, deadlocks, nightlatches, bathroom locks designed to meet EN 12209 standards.
- 5700-series (launched August 2022): A heavy-duty, fire‑rated Euro-profile mortice lockcase built from Grade 316 stainless steel, Certifire‑approved, with a quick‑reversible latch and 20 mm single‑throw deadbolt. Compatible with 5400-series dimensions and includes a mechanical guarantee.
Allegion - Briton 5210
A dual profile cylinder deadlock suitable for use on doors without lever furniture that require locking.
Unique X-Tension feature allows the spring tension to be adjusted to suit the weight of lever furniture and to eliminate lever ‘droop’
57mm backset and 57mm centre in line with guidance of BS 8300
Allegion - Briton 5220
A dual profile cylinder sashlock suitable for lockable doors with lever furniture to withdraw the latchbolt.
Deadbolt can be operated from one side or both as required depending on cylinder selected
Dual profile can be used with euro or oval profile cylinders
Allegion - Briton 5230
A dual profile cylinder bathroom sashlock for use on bathroom doors and those requiring a privacy function.
Single throw hardened steel 13mm deadbolt thrown by thumbturn and emergency release
Available with a satin stainless steel square forend with matching strike plate
Allegion - Briton 5240
A dual profile cylinder latch suitable for use on doors with lever furniture which are not required to be locked.
Unique X-Tension feature allows the spring tension to be adjusted to suit the weight of lever furniture and to eliminate lever ‘droop’
Quick reversible latch without the need to dismantle the lockcase
Allegion - Briton 5250
A dual profile cylinder deadlock suitable for use on doors without lever furniture that require locking.
Unique X-Tension feature allows the spring tension to be adjusted to suit the weight of lever furniture and to eliminate lever ‘droop’
57mm backset and 57mm centre in line with guidance of BS 8300
Allegion - Briton 5410
A euro profile cylinder deadlock suitable for use on doors without lever furniture that require locking.
60mm backset and 72mm centre in line with guidance of BS 8300
Available with a satin or polished stainless steel forend with matching strike plate
Allegion - Briton 5420
A euro profile cylinder sashlock suitable for lockable doors with lever furniture to withdraw the latchbolt.
Drill resistant heavy duty hardened deadbolt with 22mm throw on a double turn of the cylinder
Compatible with Briton 4200 & 4700 Series door furniture
Allegion - Briton 5430
A bathroom sashlock for use on bathroom doors and those requiring a privacy function.
10mm throw deadbolt operated by thumbturn & emergency release (8mm turn follower)
Cylinder latch function enables the cylinder to withdraw the deadbolt on the first turn and the latch on the second turn of the cylinder
Allegion - Briton 5440
A euro profile cylinder latch suitable for use on doors with lever furniture which are not required to be locked.
60mm backset and 72mm centre in line with guidance of BS 8300
Available with a satin or polished stainless steel forend with matching strike plate
Allegion - Briton 5470
A euro profile roller bolt lock suitable for lockable doors fitted with pull handles.
60mm backset and 72mm centre in line with guidance of BS 8300
Available with a satin or polished stainless steel forend with matching strike plate
Allegion - Briton 5710
A heavy duty, euro profile cylinder mortice deadlock suitable for use on doors without lever furniture that require locking.
20mm single throw deadbolt for fast egress and security in just one turn
Available with a Grade 316 satin stainless steel round or square forend with matching strike plate
Allegion - Briton 5720
A heavy duty, euro profile cylinder mortice sashlock suitable for lockable doors with lever furniture to withdraw the latchbolt.
20mm single throw deadbolt for fast egress and security in just one turn
Quick reversible latch without the need to dismantle the lockcase
Allegion - Briton 5730
A heavy duty, bathroom lock for use on bathroom doors and those requiring a privacy function.
20mm single throw deadbolt thrown by thumbturn and emergency release
Quick reversible latch without the need to dismantle the lockcase
Allegion - Briton 5740
A heavy duty, euro profile cylinder latch suitable for use on doors with lever furniture which are not required to be locked.
Latchbolt withdrawn from both sides by lever handles
Available with a satin or polished stainless steel forend with matching strike plate
Allegion - Briton 5750
A heavy duty, euro profile cylinder nightlatch without hold back function. Ideal for use on front entrance doors.
Nightlatch function operated by a half set of levers, to retract the latchbolt from the inside
Quick reversible latch without the need to dismantle the lockcase
Allegion - Briton 5760
A heavy duty, euro profile cylinder escape sashlock designed to be used on single inward or outward opening fire escape doors.
Deadbolt withdrawn from inside lever operation and key operation from the outside
Quick reversible latch without the need to dismantle the lockcase
- 🏷️ Features & Applications
- Built for medium- to high‑traffic environments like hospitals, schools, offices.
- Meet European mechanical and fire standards (EN 12209, EN 1634‑1) and UKCA/CE certifications.
- Made from corrosion‑resistant stainless steel and supported by a mechanical guarantee.
- Range supports various functions: sashlock, deadlock, bathroom lock, nightlatch, escape lock.
💡 Choosing the Right Model
Series Best For Features 5400-series Standard commercial use Euro cylinder options, EN-certified, cost-effective 5700-series Fire-rated or high-traffic use Stainless steel, Certifire approved, single‑throw deadbolt, enhanced durability For example:
- If you need a heavy-duty fire‑rated lock, go for the 5700-series.
- If it’s a standard installation replacement, a 5400-series model should serve well and fit existing cut-outs.
