Do You Know This Glossary Of Doors Part 7

- Apr 11, 2019-

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Mortise A recess cut into the surface or edge of a part, usually for the purpose of housing hardware such as hinges, latch plates etc. 


Mortise-Type Lock   A lock-set which usually has a rectangular-shaped mechanism, which is housed into a deep recess cut into the edge of a door. 


Mullion A post or divider which runs from sill to frame top in a multi-panel door, or door and sidelite assembly. In stile and rail doors, the vertical wood parts which separate panels, 

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NRP Hinge       An abbreviation for a hinge with a non-removable pivot pin. NRP hinges are used when exterior doors swing out, as a security feature. The fixed pins make it impossible to remove a door by driving out pivot pins. 

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Outswing    An exterior door assembly in which the door panel swings outside the building.