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Definitions of the Terms

Frame  : A group of members assembled and placed along the top, bottom and sides of an opening so as to form an enclosure and a support for the door assembly. 

Sill  : The horizontal member forming the bottom of the frame. 

Shutter  : Planks, panelled or otherwise, which fit in the frame. 

Style  : Upright or vertical outside members of a shutter a frame work. 

Top Rail  : The top mast horizontal member of a shutter or framework 

Lock Rail  :  Middle horizontal member a shutter or framework wherein lock and bolt are fixed. 

Bottom Rail  : The lower most horizontal member of a shutter or framework. 

Mullion : The vertical member running through a shutter or a frame. 

Jamb : Vertical face of a window or door opening which supports the frame. 

Reveal : External jamb of a door or window openings at right angles to the face of the wall. 

Sash Bar : Light weight units of a frame which carry .the glass within a window or a door frame. 

Sash Door : Door where upper part is glazed 

Panel : The area included between the rails. 

Hanging or Hinged Style :The styles of a door, which is hung on one side. 

Cross Rail : Additional horizontal member connecting the two styles of a shutter or framework. 

Transom  : Horizontal dividing member in a window or door frame. 

Threshold  : Wooden fixture fixed to the floor under a door frame, thus  enabling the door to be cut short enough to clear floor coverings on the inside. 

Rebate  :  Depression cut in the frame to receive the door.  

Louver  : An inclined piece of wood fixed in a framework. 

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