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Occasional Pieces-

Means not more that 10% of the pieces in a parcel or shipment.

 
Ogee or O.G.-
  Having and "S" shaped or reverse curve profile; the "ogee" arch was pointed with an "ogee" curve on each side and was prominent in Gothic Architecture; also O.G.

 
Open Air Space Calculation -  
  To calculate the open air space in a louver door, count the number of spaces between the louvers and rails.  Multiply this number time the width of the space times the width of the door minus the total width of both stiles.

Example:

4 1/4" stiles on a 30" by 80" door.
30" - 8 1/2" (Total Stile Width: 2 x 4 1/4") = 21 1/2" length of air space
64 louvers
66 air spaces at 1/8" wide
66 x 1/8" x 21 1/2" = 177.375 square inches of air space.
Ovolo-  
  A convex profile usually a quarter section of circle and similar to the profile of "quarter-round."

 

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