What is the most effective mortice lock?

Is a 2-3 lever mortice lock more secure and effective than a five-lever mortice lock? Why/why not? Thank you!

Asked by Patrick on 18th May 2022
Expert Trade Answers
"5 lever high security lock every time they are backed by insurance companies and very often stipulated for timber doors"
Answered on 18th May 2022 - Member since Aug 2019 - report
"Hi,

There are not more secure or as effective as the 5 lever locks.

Reason: what you want is a 5-lever British standard. Which means it's been tested against regulations and standards.

The 5 levers as the names suggest have 5 levers in them rather than 3 or 2. Effectively this means 3 or 2 levers or easier to by pass."
Answered on 18th May 2022 - Member since Nov 2020 - report
"5 lever mortice lock is more affective and is also a kite marked British standard lock"
Answered on 18th May 2022 - Member since Apr 2022 - report
"Hi Patrick. A 2-3 lever lock is usually used on internal and bathroom doors while a 5 is a more secure lock used for front and rear doors. A British standard 5 lever lock would be most effective and secure as it includes anti-Burglary features such as a curtain, anti-pick notches, reinforced bolt and additional plating to protect against drilling. Insurance company’s usually ask home owners to fit British standard lever locks to their front and rear door."
Answered on 18th May 2022 - Member since Feb 2021 - report
"The 5 lever mortice is more secure as there are more combinations than a 2 / 3 lever lock.
The best one is a 5 Lever BS3621."
Answered on 19th May 2022 - Member since Dec 2018 - report
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