Locks and Security

The level of security a lockset offers depends on how its made. Any type with a key in the knob or handle is only marginally secure--these can be easily foiled by a burglar. For a significant level of security, a deadbolt should have at least a 1-inch throw (extend a minimum of 1 inch beyond the door's edge) and be made of case-hardened steel.

For a double-cylinder deadbolt, you must use a key from both sides of the door. This is the safest type to use for doors with windows (or else a burglar can just break the glass and reach in to turn the bolt). When people are in the house, however, the key should be left in the interior lock to provide for quick exit in a fire or emergency.

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