Door Anatomy, Measurements,
& Terminology

HOW TO DETERMINE BACKSET

HOW TO DETERMINE BACKSET

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HOW TO DETERMINE DOOR HANDING

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HOW TO DETERMINE DOOR 
HANDING
WHAT IS A TUBE LATCH?

WHAT IS A TUBE LATCH?

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WHAT IS A MORTISE LOCK?

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WHAT IS A MORTISE LOCK?

Door Anatomy, Measurements,
& Terminology




HOW TO DETERMINE A BACKSET



HOW TO DETERMINE DOOR HANDING



WHAT IS A TUBE LATCH?



WHAT IS A MORTISE LOCK?