Single Vs Double Cylinder Door Locks

The two main reasons for this are efficiency and economy.

Single vs double cylinder door locks. This prevents intruders from entering and exiting easily. Single sided deadbolts have a knob on the inside that is used to unlock and lock them from the inside. While the single cylinder deadbolt only features a locking mechanism requiring a key on one side the double cylinder deadbolt has it on both. Double cylinder locks contain two cylinders.

Double cylinder door locks. A single cylinder has a keyed entry on one side while a double cylinder has keyed entries on both sides. Doors outfitted with single cylinders are unlocked with a key from the outside but do not require a key for unlocking from the interior of the property. Single cylinder locks have only one lock cylinder as the name implies.

The number of cylinders inside a lock translates to the number of keyed entries on the door. This difference has one primary trade off. The single cylinder deadbolt is the most common. Instead the door is unlocked with a thumbturn style lever.

Double cylinder deadbolts are locks that require a key to open from both the inside and outside. Single cylinder use a keyed on the outside and a thumb turn on the inside. A double cylinder deadbolt has no thumb turn. Single cylinder deadbolts are the commonest type in most homes.

This is useful for doors with glass panels or near windows. A simple thumb turn locks and unlocks the door. On the other hand single sided deadbolts require key to unlock from the outside only. It is found on front or back exterior doors and requires a key to open it from outside.

They are also more convenient since there s no need for a key to operate the lock from the inside. Single cylinder locks are usually less costly to purchase and install than double cylinders. The difference is that you need to lock the door from both inside and outside with the key. This is the main difference between these two types of deadbolts.

Double cylinder locks is the number of cylinders. No one can break the glass and operate the thumb turn to enter. Double cylinder locks use a key on both sides. Single cylinder locks are more common than double cylinder.

It means that you will need to use the key to unlock the door no matter which side you are on. A thumb turn opens it from the inside. Single and double cylinder door locks provide options for exterior doors.