Type of front door lock back door lock a key operated multi point lock system is fitted into the body of the door and locks into the door frame.
Front door lock standards.
Bs3621 is a lock standard by british standards institute bsi for thief resistant locks bs 3621 locks are found on some front and back doors in the home and it s a good way to check that your security is up to standard.
The american national standards institute ansi assigns grades to locks that reflect how well you can expect them to perform over time.
There are 3 basic grades of locks starting with grade 1 which rates locks at 800 000 locking cycles grade two at 400 000 cycles and grade 3 at 200 000 cycles.
To get the best front door locks you need to make sure that your measurements are always right.
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Locks that are grade 1 offer the highest level of strength and security.
There are four main factors that determine a deadbolt s over all level of security.
The institute is a private non profit that helps create standards for many products.
This is why some insurance companies require door locks are fitted to bs 3621 british standard.
Security is why you would install a deadbolt in the first place.
When boring deadbolt locks in a door there are two standards for spacing between the bottom lock and the deadbolt.
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The two most common are 5 1 2 and 6 from the centers of the two holes.
Grade 1 top ansi lock grade.
There are other combinations of spacing which are used on specialty locks however.
You need to make sure that the diameter of your old cylinder is consistent with the high security cylinder you are replacing it with.
But selecting the right lock for your front door can be confusing.
When you see packaging bearing ansi grade 3 or 2 or 1 those numbers on door locks and deadbolts are a collaboration between ansi and the builders hardware manufacturers association.
When the lock is engaged multiple bolts will engage into the door frame usually with a minimum of 3 points and sometimes 4 or 5 points.
The actual lock grade refers to the amount of times that a lock and unlocking can be performed.
Grade 1 is the highest quality lock that you can buy.
It s a reflection of the durability of the internal door lock types not the amount of security they provide.
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