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skip to ERA Fortress Mortice SashLock (BS3621:2007)

ERA Fortress Mortice SashLock (BS3621:2007)

£19.08

(£15.90 ex VAT)

sku: ERAFSL

This High Security 5 lever British Standard (BS3621:2007) sashlock has been designed to meet the exacting demands of the insurance companies and the Police. Higher security levels are delivered by a 20mm bolt throw, hardened steel plates to resist drilling, and four hardened steel rollers in the deadbolt to resist hack sawing.

The Fortress Sashlock features a pull and twist action latch which can easily reverse the hand of the lock without the removal of the lock cover or screws. The keys, manufactured of manganese bronze have 1,000 variations for added security. Internally all the steel levers have false notching to resist lock picking.

Mechanism: 5 Lever
Security Level: British Standard - BS3621:2007
Case Size: 67mm or 79mm
Case Finish: Red
Forend Finish: Polished Brass, Satin Chrome, Polished Chrome
Keys Supplied: 2
Differs: 1000
Handling: Reversible

Document Icon product info

Era Fortress BS3621 Range of mortice locks which can be keyed alike together

ERA Fortress Mortice DeadLock (BS3621:2007) £ 17.88
ERA Fortress Mortice SashLock (BS3621:2007) £ 19.08

Finish

Case Size

Key Configuration

Keys Supplied: per lock ( total) total (unless ordering multiple groups)
Additional Keys are available below
Qty:

Shipping From:

When ordering multiple Keyed Alike locks, only 1 set of keys are provided as all additional locks are made to work from that key.

If ordering 4 or more keyed alike locks you can have them set up as different groups. If Required: Let us know the details in the "Specific Key Requirements" field above.

Each group of locks will then receive keys.

9/10 Security Rating
british-standard British Standard - BS3621
Dimensions Image: ERA Fortress Mortice SashLock (BS3621:2007)
Part Min (mm) Max (mm)
centres 57 -
Backset 44 56
Bolt Length 20 -
Case Width 67 79
Case Height 109 -
Forend Width 26 -
Forend Length 162 -
Strike Plate Width 30 -
Strike Plate Length 178 -
Dimensions Image: ERA Fortress Mortice SashLock (BS3621:2007)

Brand

SKU

ERAFSL

Box Contents

2 keys

strike plate

fixing screws

instructions

mortice lock

Certifications

british-standard British Standard - BS3621

FAQs

All the extra keys for the locks are cut to the specific locks that have been ordered.

There are 2 different sizes of lock cases as each lock will give you a different backset. This is the distance from the edge of the lock to the keyhole / spindle for handles. The bigger locks are better for solid wooden doors as they move the keyhole away from the door stop further. If you have a large door stop and fit a 64mm lock case you can find that you hit your knuckles on the door stop when you turn the key. Alternatively the 64mm lock case is better when you have a glass panelled door as you may not have enough wood on the stile to fit the 76mm lock into before you hit and therefore smash the glass. This is very important to check when installing locks to doors with glass in.

No, if the door is a communal entrance/ exit you MUST have a turn on the inside, so a 5 lever key on the inside is not suitable.

There are specific locks we sell called Egress locks that meet both the Insurance and Fire regulations so these are suitable for communal entrance doors.

To meet the fire regulations you need to be able to exit a communal door without the use of a key. If you are using the lock on your personal front door then they are fine but if others use the door you need to look into getting a turn knob internally so you can exit without the use of a key.

With outward opening doors you can not get a BS3621 outward opening nightlatch (see our section for all the options we have available) but if you install a standard security nightlatch you can also fit a BS3621 deadlock to the door which will give you the insurance rated lock required. As the deadlocks are not handed you can use them on any type of wooden door.

With most locks that are altered to make them keyed alike you will only get 1 x set of keys with them. So if the locks normally come with 2 you will only get 2 keys total and if they come with 3 keys you will only get 3 x keys total when ordered keyed alike.

Yes you can, we would need a key back as we dont hold any records of your keys but this is possible. Please get in touch first so we can confirm everything is ok to do and then you can post your key back to us (taped to a piece of card...essential!!)

Yes, this is possible but it is important to make sure you select the same brand and model. The internals and the keys need to match so we can key the locks alike.

We do try to list the products together in our series tab on the product page which should show the suitable products that can be keyed alike together.

If in doubt please ask us and we will let you know.

A rebate set is only required on double rebated doors. If you only have a single door then you will receive all the parts you require with the lock. If you need a rebate set you will need to check the size of your rebate. The most common is 13mm but on older doors they can be 19mm or 25mm.

With the 5 lever locks they are designed to be high security so there are thousands of different keys so the keys do not come with numbers on. Therefore we can not cut additional keys for these locks without a key to copy from. If you post it back to us we can do it for you (please contact us first before you send it) or alternatively nearly all the keys we sell are available from local locksmiths in your area. They maybe more expensive so we would recommend buying the extra keys at the time of purchase so we can cut and try them before we ship the order.

Sashlocks are typically suitable for both left- and right-handed doors, as well as inward- and outward-opening applications. They are designed to be reversible on site, making installation flexible and straightforward.

Depending on the brand and model, latch reversal can be done in one of two ways:

  • Pull and twist the latch bolt to the desired position

  • Remove a retaining screw on the back of the lock case, rotate the latch, then refit the screw

This allows for easy adjustment during installation without the need for specialized tools.

Yes. The ERA Fortress Sashlock is Kitemarked to British Standard BS3621:2007. This certification means it meets the high-security requirements typically specified by insurance companies and the Police for external timber doors.

Yes. The lock features a 'pull and twist' latch mechanism that allows you to reverse the hand of the lock easily. This can be done without removing the lock cover or any screws, making it compatible with both door orientations.

The deadbolt is designed to resist physical attacks using four hardened steel rollers to prevent hacksawing. Additionally, the lock case is protected by hardened steel plates to resist drilling, and the internal levers are false-notched to deter picking.

This lock is available in two case sizes: 67mm and 79mm. When choosing, consider the depth of the mortice required in your door. The 67mm case is generally used for narrower door stiles, while the 79mm provides a deeper backset.

Related Products

skip to ERA 5 Lever Mortice Locks Extra Key

ERA 5 Lever Mortice Locks Extra Key

£3.60

(£3.00 ex VAT)

sku: 8796
  • Compatible with ERA 5-lever mortice lock ranges
  • Supplied pre-cut for immediate use with your specific lock
  • Precision machined for smooth operation within the lever mechanism
  • Allows for additional key holders without the need for locksmith visits
  • Ideal for residential and commercial door security setups
  • Manufactured to original equipment standards for long-term reliability

Keys Supplied: per lock ( total) total (unless ordering multiple groups)
Qty:

Shipping From:

When ordering multiple Keyed Alike locks, only 1 set of keys are provided as all additional locks are made to work from that key.

If ordering 4 or more keyed alike locks you can have them set up as different groups. If Required: Let us know the details in the "Specific Key Requirements" field above.

Each group of locks will then receive keys.

This ERA 5 Lever Mortice Lock Extra Key is a pre-cut accessory designed to work seamlessly with the ERA range of 5-lever security locks. These keys are specifically cut to match the internal lever configuration of your chosen lock unit, providing a reliable and durable solution for additional access requirements.

Typically used in both residential and commercial applications, extra keys are essential for multi-user households or shared premises. By ordering keys cut to the lock's specific code at the point of purchase, you ensure a higher level of precision compared to standard aftermarket duplicates, which helps to prevent unnecessary wear and tear on the lock's internal components.

  • Compatible with all standard ERA 5-lever mortice locks
  • Supplied as a finished, cut key ready for immediate use
  • Recommended for use when multiple spare sets are required for new lock installations
skip to ERA Intumescent Kit To Suit ERA Fortress BS Sashlock

ERA Intumescent Kit To Suit ERA Fortress BS Sashlock

£8.39

(£6.99 ex VAT)

sku: DANFSL1IK
  • Provides essential fire protection for timber door assemblies
  • Designed specifically for use with ERA Fortress BS Sashlocks
  • Expands under heat to seal gaps and prevent the passage of fire
  • Self-adhesive backing for quick and accurate positioning during installation
  • Ultra-thin flexible material ensures standard lock fitment is maintained
  • Suitable for use on both 30 and 60-minute fire-rated timber doors
  • Pre-cut components ensure full coverage of the lock case and forend
Qty:

Shipping From:

When ordering multiple Keyed Alike locks, only 1 set of keys are provided as all additional locks are made to work from that key.

If ordering 4 or more keyed alike locks you can have them set up as different groups. If Required: Let us know the details in the "Specific Key Requirements" field above.

Each group of locks will then receive keys.

The ERA Intumescent Kit is a critical safety component designed to maintain the fire integrity of timber door sets. When a mortice lock is installed, the removal of timber to accommodate the lock case can create a vulnerability in the door's fire resistance. This kit is specifically engineered to compensate for that removed material, providing a robust barrier against heat and flames.

Manufactured from high-performance intumescent material, the kit reacts to heat by expanding to many times its original thickness. This process effectively seals any gaps between the lock and the door, preventing the spread of fire and smoke through the mortice cavity. The material is flexible and thin, ensuring it does not interfere with the smooth operation of the lock mechanism or the overall fit within the door.

These kits are pre-cut to match the specific dimensions of the ERA Fortress BS Sashlock series, ensuring comprehensive protection. They are typically used in commercial and residential applications where fire-rated doors are a building requirement. The inclusion of self-adhesive surfaces allows for a straightforward application process, where the intumescent sheets are fixed directly to the lock body prior to installation.

skip to Suitable Size Drill Bits to fit Mortice Locks

Suitable Size Drill Bits to fit Mortice Locks

£11.99

(£9.99 ex VAT)

sku: MortTool
  • Designed specifically for the installation of mortice locks in timber doors
  • Includes flat wood bits for rapid and efficient boring of the lock case cavity
  • Features a pilot drill bit to ensure accurate alignment before main drilling
  • Compatible with all standard power drill chucks and bit holders
  • Essential toolkit for ensuring a professional fit for sashlocks and deadlocks
  • Suitable for use on both internal and external wooden door types
Qty:

Shipping From:

When ordering multiple Keyed Alike locks, only 1 set of keys are provided as all additional locks are made to work from that key.

If ordering 4 or more keyed alike locks you can have them set up as different groups. If Required: Let us know the details in the "Specific Key Requirements" field above.

Each group of locks will then receive keys.

The Mortice Lock Drill Bit Kit is a specialised set of tooling designed to facilitate the precise installation of mortice sashlocks and deadlocks. By providing the essential drill bit diameters required for standard lock bodies, this kit ensures that the mortice cavity is bored to the correct depth and width with minimal effort.

The kit features flat wood bits which are ideal for the rapid removal of material from timber door stiles. These bits are designed to create clean, straight holes that accommodate the lock case without causing splitting. The inclusion of a pilot bit allows for accurate marking and initial drilling, which is critical for maintaining the structural integrity of the door and ensuring the lock operates correctly.

Commonly used by joiners and locksmiths, this kit is suitable for both new door installations and when upgrading existing hardware. It is compatible with most standard power drills, making it a versatile tool for residential or commercial door preparation.

Brand

SKU

MortTool

Box Contents

1 x Black and Decker 18mm Flat wood bit (for main mortice hole)

1 x Black and Decker 10mm Flat wood bit (for Key Holes)

2 x Black and Decker 2.5mm drill (for pilot holes)

skip to Suitable Size Chisels to fit Mortice Locks

Suitable Size Chisels to fit Mortice Locks

£17.99

(£14.99 ex VAT)

sku: MortChis

This Chisel set will contain 1 of each of the sizes you will need to fit a mortice lock to a wooden door

Kit includes:

1 x Faithful 19mm Chisel

1 x Faithful 25mm Chisel

The Faithfull bevel edged chisel range are quality tools for professional work as well as DIY users. The blue PVC handles on these chisels are impact resistant and designed for use with a mallet, or an occasional hammer blow.

Each blade is manufactured from drop-forged chrome vanadium steel and is hardened and tempered to exacting standards, ensuring that the cutting edge remains sharper for longer. The bevelled edges make these chisels ideal for fine work and for cutting into tight corners.

All the chisels in this range are supplied with blade guards.

Qty:

Shipping From:

When ordering multiple Keyed Alike locks, only 1 set of keys are provided as all additional locks are made to work from that key.

If ordering 4 or more keyed alike locks you can have them set up as different groups. If Required: Let us know the details in the "Specific Key Requirements" field above.

Each group of locks will then receive keys.

Brand

SKU

MortChis

Box Contents

19mm Chisel

25mm Chisel

Blade Guards

skip to Complete Set of 4 Chisels by Blue Spot

Complete Set of 4 Chisels by Blue Spot

£16.79

(£13.99 ex VAT)

sku: BLChisSet
  • Hardened steel blades for enhanced durability and edge retention
  • Precision ground edges for accurate paring and cutting
  • Ergonomic grooved handles for improved grip and control
  • Bevel edge design suitable for reaching into restricted areas
  • Integrated hanging holes for convenient tool storage
  • Designed for general-purpose woodworking and joinery tasks
Qty:

Shipping From:

When ordering multiple Keyed Alike locks, only 1 set of keys are provided as all additional locks are made to work from that key.

If ordering 4 or more keyed alike locks you can have them set up as different groups. If Required: Let us know the details in the "Specific Key Requirements" field above.

Each group of locks will then receive keys.

The Blue Spot 4 Piece Wood Chisel Set is designed for a variety of woodworking tasks, ranging from fine paring to general-purpose shaping. Each chisel features a blade manufactured from hardened steel, providing the necessary strength to withstand repeated impact and maintain a sharp cutting edge over time.

These chisels are equipped with precision ground blades, ensuring accuracy during intricate joinery work. The handles are constructed from a durable plastic with a textured, grooved finish to provide a secure and comfortable grip, reducing the risk of slipping during use. Each handle also includes a hanging hole for efficient workshop organisation.

This set is an essential addition to any toolbox for tasks such as creating recesses for hinges, cleaning out mortises, or paring down timber. The bevelled edges allow for better access when working in tight corners or narrow joints, making them suitable for both DIY enthusiasts and tradespeople alike.

Dimensions Image: Complete Set of 4 Chisels by Blue Spot

Brand

SKU

BLChisSet

Box Contents

1 x 6mm Chisel

1 x 12mm Chisel

1 x 19mm Chisel

1 x 25mm Chisel

skip to Era 13mm Rebate for Fortress Sashlocks

Era 13mm Rebate for Fortress Sashlocks

£23.99

(£19.99 ex VAT)

sku: EraRebate
  • Designed specifically for use with ERA Fortress mortice sashlocks
  • Enables secure installation of locks on rebated double doors
  • Provides a precise fit for overlapping door stiles to ensure correct latching
  • Maintains the integrity and security of the mortice lock system
  • Supplied with all required fixings and strike plates for a complete installation
  • Suitable for both internal and external timber door applications

Finish

Keys Supplied: per lock ( total) total (unless ordering multiple groups)
Qty:

Shipping From:

When ordering multiple Keyed Alike locks, only 1 set of keys are provided as all additional locks are made to work from that key.

If ordering 4 or more keyed alike locks you can have them set up as different groups. If Required: Let us know the details in the "Specific Key Requirements" field above.

Each group of locks will then receive keys.

The ERA Fortress Rebate Set is an essential accessory designed to facilitate the installation of ERA Fortress mortice sashlocks on double doors with rebated meeting stiles. In applications where doors overlap, a standard strike plate is insufficient; this rebate set provides the necessary hardware to ensure the lock bolt and latch engage securely within the door frame profile.

Constructed to the same exacting standards as the Fortress range, this component ensures that the security performance of the lock is not compromised when fitted to a double door set. It is typically used for French doors or any timber double door configuration where a rebated edge is present.

  • Ensures smooth operation of the latch and deadbolt
  • Compatible with the ERA Fortress series of high-security sashlocks
  • Ideal for new installations or as a replacement for existing hardware

The kit includes a specialized strike plate and housing, designed to be morticed into the slave leaf of the door pair, providing a professional and secure finish to the locking point.