A double cylinder door lock is a type of security device primarily found on residential doors.
How to install double cylinder door lock.
Replacing a euro cylinder or upvc door lock a simple guide from www fastkeys co uk additional info step 1.
Instead the door is locked or unlocked using a thumb turn style lever.
You ll have to adjust the position a bit if you have a combination storm door so as not to interfere with the storm doorknob or lock.
Open front door to reveal the face of the lock.
This is a video on how to replace the key cylinder in a commercial storefront door.
Choose a position on the door for the lock.
They can also be used as the primary locking mechanism on patio or balcony doors.
Installation of a double cylinder deadbolt uses the same size and dimension of pre drilled door holes as a conventional single cylinder deadbolt does and it is installed using the same procedure.
Single cylinder deadbolts entry knobs and handlesets are operated with a key from the outside but do not require a key for locking or unlocking from the interior of the property.
If you re in a situation where you cannot or do not want to use a drill to install your lock there are a couple ways of installing an interior door lock without a drill.
This is the easiest way to rekey your door if you re giving the cylin.
Single cylinder locks are more common than double cylinder.
These locks require a key to lock or unlock the door both from the outside and the inside making them a little safer in one regard.
Install the deadbolt lock about 44 inches above the bottom of the door.
For example if there s a window on or nearby the door think of sidelight windows.
For safety reasons if you choose a double cylinder deadbolt make absolutely certain your family knows where the key is and leaves it there.
Calling a locksmith out for this how to install a deadbolt lock job will cost 150 or more but you can install a heavy duty deadbolt yourself in less than an hour for a third of the price.