---
product_id: 48606169
title: "Fortress BS 3621 2.5-inch/ 64mm 5 Lever Maximum Security Mortice Sashlock - Brass Effect"
brand: "era"
price: "€ 51.11"
currency: EUR
in_stock: true
reviews_count: 8
category: "Era"
url: https://www.desertcart.fi/products/48606169-fortress-bs-3621-2-5-inch-64mm-5-lever-maximum
store_origin: FI
region: Finland
---

# 5 Lever Maximum Security Reversible Latchbolt for Any Door Hacksaw & Drill Resistant Fortress BS 3621 2.5-inch/ 64mm 5 Lever Maximum Security Mortice Sashlock - Brass Effect

**Brand:** era
**Price:** € 51.11
**Availability:** ✅ In Stock

## Summary

> 🔐 Lock in peace of mind with ERA Fortress – security that stands the test of time!

## Quick Answers

- **What is this?** Fortress BS 3621 2.5-inch/ 64mm 5 Lever Maximum Security Mortice Sashlock - Brass Effect by era
- **How much does it cost?** € 51.11 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/48606169-fortress-bs-3621-2-5-inch-64mm-5-lever-maximum)

## Best For

- era enthusiasts

## Why This Product

- Trusted era brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Defy Attacks:** Hardened steel plates and laminated deadbolt resist hacksaws, drills, and lockpicks.
- • **Effortless Installation:** Includes all fixings and clear instructions for a quick, professional fit.
- • **Unmatched 5-Lever Security:** BS 3621 certified for ultimate protection, trusted by police & insurers.
- • **Timeless Brass Effect Finish:** Elegant, durable alloy steel design that elevates your door’s aesthetic and security.
- • **Versatile Door Compatibility:** Reversible latchbolt fits both left and right-handed external timber or composite doors.

## Overview

The ERA Fortress BS 3621 5 Lever Mortice Sashlock delivers maximum security with a police and insurance-approved standard. Featuring a 20mm laminated steel deadbolt, hardened steel casing, and a pick-resistant 5-lever mechanism, it’s engineered to withstand hacksaw, drill, and lockpicking attacks. Designed for external timber and composite doors, its reversible latchbolt ensures seamless installation on any door orientation. Finished in a stylish brass effect, this lock combines robust protection with classic aesthetics, backed by ERA’s 150+ years of trusted security expertise.

## Description

ERA Fortress British Standard 3621 5 Lever Maximum Security Sashlocks are recommended for External timber and composite doors. The BS 3621 standard is recognised as giving the maximum protection for home and commercial use, approved by Insurance companies and the Police. The laminated steel Deadbolt helps to prevent hacksaw attacks. The Deadbolt has a 20mm throw for greater security. Hardened steel plates on the casing prevent drill attacks. The 5 Lever mechanism is designed to prevent lock picking. The Latchbolt can be easily reversed for left or right handed doors. ERA Fortress Sashlocks are ideal for use in new doors or upgrading security from 2 and 3 lever door locks. Sashlocks are for use with door handles. The lock is operated from either side of the via a key. ERA Locks have been providing high quality home and business security products for over 150 years. ERA is one of the UK's most recognised Lock brands providing you with the peace of mind that your property and possesions are locked up safe and sound. ERA Locks are approved by Insurance companies. The extensive range of products includes, Nightlatches, Mortice Locks, Window Locks, Cylinders, UPVC and Composite door locks, Digital Door Locks & Wordlock Padlocks.

Review: Value for money , years of reliable use - Bought nearly 7 years ago and this has always been reliable. Given some of the recent comments I felt it appropriate to recommend this lock that has served me well and continues to be very reliable. Easy fit, good price and choice to make.
Review: Good product - Easy to install, good build, looks good, very solid and secure

## Features

- Warning:Not suitable for children under 3 years. For use under adult supervision
- Hacksaw, Drill, Pick resistant
- For use with door handles
- (262-31). Fixings included

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003TKWNOO |
| Best Sellers Rank | 6,927 in DIY & Tools ( See Top 100 in DIY & Tools ) 6 in Mortise Locks 18 in Lock Cylinders 197 in Home Security Systems |
| Brand | ERA |
| Colour | Brass |
| Control Method | Touch |
| Customer Reviews | 4.4 out of 5 stars 1,674 Reviews |
| Finish | Brass Effect |
| Global Trade Identification Number | 05011988002097 |
| Included Components | ['Lock case', 'Face plate', 'Box striker', '2 keys', 'Covered keyhole escutcheon', 'Keyhole '10 screws', 'Fitting instructions'] |
| Item Dimensions | 19.4 x 11.6 x 3.2 centimetres |
| Item Type Name | ERA Fortress 262 & 362 BS 5 Lever Sashlock |
| Item Weight | 408 Grams |
| Item dimensions L x W x H | 19.4 x 11.6 x 3.2 centimetres |
| Item height | 3.2 centimetres |
| Lock Type | Key Lock |
| Lock type | Key Lock |
| Manufacturer | ERA |
| Manufacturer Warranty Description | N/a. |
| Material | Alloy Steel , Brass |
| Model Number | 262-31 |
| Recommended Uses For Product | Security |
| Recommended uses for product | Security |
| Shape | Rectangular |
| Special Features | Key Unlock |
| Special feature | Key Unlock |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** ERA
- **Special feature:** Key Unlock
- **Lock type:** Key Lock
- **Item dimensions L x W x H:** 19.4 x 11.6 x 3.2 centimetres
- **Material:** Alloy Steel, Brass

## Images

![Fortress BS 3621 2.5-inch/ 64mm 5 Lever Maximum Security Mortice Sashlock - Brass Effect - Image 1](https://m.media-amazon.com/images/I/61EbhLNZ63L.jpg)

## Questions & Answers

**Q: can you advise size in imperial 19.4cmx11.4cmx3.4cm**
A: 19.4 x 11.6 x 3.2 cm actually refers to the size of the box the lock is delivered in !I found the actual dimensions elsewhere: https://www.locksonline.co.uk/acatalog/British-Standard-BS3621-Era-Fortress-Sash-Lock.htmlThanks Amazon (sarcasm)

**Q: Can I fit this to a 44mm thick hardwood exterior door?**
A: Checked my door, lock needs about 17 mm recess into door, this would then leave 27 mm, ie 13 mm each side of lock, should be sufficient as door is hardwood !. When I was looking for lock for my workshop 17 mm seemed the most narrow available.  Hope this helps.

**Q: What is the measurement in between the two bolts - existing one is 7mm between both bolts**
A: Measuring from the underside of the latch to the top of the bolt on this particular lock is 12mm, hope that is helpful.

**Q: What measurement is 64mm? i need to replace a faulty lock and obviously want to buy the right size. existing lock is era but can't see anything 64mm**
A: It's the depth of the lock. i.e the mortice in the door needs to be 64mm or more in depth to house the lock.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Value for money , years of reliable use
*by D***E on 6 October 2025*

Bought nearly 7 years ago and this has always been reliable. Given some of the recent comments I felt it appropriate to recommend this lock that has served me well and continues to be very reliable. Easy fit, good price and choice to make.

### ⭐⭐⭐⭐⭐ Good product
*by Z***A on 9 October 2025*

Easy to install, good build, looks good, very solid and secure

### ⭐⭐⭐⭐ Bit early to review but looks nice
*by V***M on 23 August 2025*

Just replaced the old lock and it fits very well , in first view it looks very strong but it is too early to say anything but amazed with quality ( though price is bit high in comparisons )

## Frequently Bought Together

- ERA Fortress BS 3621 2.5-inch/ 64mm 5 Lever Maximum Security Mortice Sashlock - Brass Effect
- Black Antique Door Handles Lever Lock Plain

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**Shop now:** [https://www.desertcart.fi/products/48606169-fortress-bs-3621-2-5-inch-64mm-5-lever-maximum](https://www.desertcart.fi/products/48606169-fortress-bs-3621-2-5-inch-64mm-5-lever-maximum)

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-06*