Keyzoo Blogs

How to Unlock a Door Without a Key (By Lock Type)

A locksmith on how to unlock a door without a key: find the release on an interior privacy lock, and why a credit card does nothing to a front door.

Single vs Double Cylinder Deadbolt: Which Is Allowed?

Single cylinder vs double cylinder deadbolt, from a locksmith: how to tell which one you have, what the code says, and where a second keyhole is fine.

Lost Your Mailbox Key? Costs and Who Can Replace It

Lost your mailbox key? What USPS charges for a replacement, who can legally replace the lock, and why nobody may copy a Post Office mailbox key.

Lost Sentry Safe Key? What to Do and What It Costs

Lost your Sentry safe key? Here is how to order a replacement from SentrySafe, what it costs, how long it takes, and when a locksmith is faster.

Deadbolt Stuck in the Locked Position? 6 Causes

Your deadbolt is stuck in the locked position. Here are the six reasons a key or thumbturn quits turning, and what fixes each one.

What Is a Mortise Lock? How to Tell If Your Door Has One

A mortise lock is one box inside your door edge holding the latch and the deadbolt. Here is the 10 second check, plus why smart locks will not fit.