![]() ![]() This lock is by far one of the most used for residential and commercial security. Learn about 5 Important Lock Types Throughout History. Diagram showing the parts of a cylinder door lock, including the knob, rose, cylinder, latch assembly, bolt and strike plate. Because this lock type can pose a hazard in the event of a fire, double deadbolts should always be kept unlocked when people are inside the home or business. This renders it impossible for a burglar to gain entry by breaking a window and unlocking the door with a thumb-turn mechanism. For an easy security boost, home and business owners often choose to add a keyed deadbolt lock.ĭouble cylinder locks require a key to open the lock from both sides of the door. Unfortunately, this type of lock can be fairly easily forced open using typical burglar picking and bumping techniques. Cylinder locks entry sets are typically locked from the inside using a button and unlocked from outside of the door with a key. This common lock type can be found with both knob or lever hardware. ![]() These can be installed on steel, wood or fiberglass front doors. The exterior surface of these locksets are made from more durable material that can stand up to tough conditions and they offer a much higher level of security than interior locks. ![]() For most homes and light commercial activities, such as small retail spaces, the following locksets are the most trusted in the United States. Locks for Exterior Doors – Residential & Light Commercial Residential & Commercial Locksmith Services.Locks for Exterior Doors – Commercial & High Security.Locks for Exterior Doors – Residential & Light Commercial. ![]()
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