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GLOSSARY OF INDUSTRY RELATED TERMS
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
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Meeting Rail
The point at which the horizontal sections of the top and bottom sash meet. On sliders, the meeting rail is vertical.
 
Moulding
A strip of wood, usually shaped to a curved profile, used to accent and emphasize the ornamentation of a structure and to conceal surface or angle joints.
 
Mulled Unit
Two or more window units structurally joined together.
 
Mullion
A metal or vinyl extrusion used to structurally join two or more windows.
 
Muntin
The pieces of decorative grid that help divide a window opening into smaller sections. Also called a grille.
 
Muntin Bar
See muntin.
 
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