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Window Glossary

Window Glossary

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There are currently 7 names in this directory beginning with the letter H.
Hard-coat glass:
A glass product that is coated during the manufacturing process at the molten glass stage. Also known as a pyrolytic coating. The other type of glass coating is a sputter-coat which is applied in a secondary process. Sometimes referred to as soft-coat.
Head:
Main horizontal frame member at the top of a window or door.
Header:
Horizontal framing member placed over the rough opening of a window or door to prevent the weight of a wall or roof from resting on the frame. Also know as a lintel.
Heat Gain:
The transfer of heat from outside to inside by means of conduction, convection and radiation through all surfaces of a house. 
Heat Loss:
The transfer of heat from outside to inside by means of conduction, convection and radiation through all surfaces of a house. 
Hopper:
Window with sash that swings inward from the top.
Horizontal Slider:
A window with a movable sash that slides horizontally.

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