A handle is a component which enables the movement of a sash, leaf, or panel or which activates a mechanism which locks or unlocks a sash, leaf, or panel. [top]

Hard coat glass is a glass product that is coated during the manufacturing process at the molten glass stage. Also known as pyrolytic coating, this type of coating offers a surface that is generally as durable as an ordinary glass surface, and therefore requires no special handling and does not need to be used in an insulated glass unit. The other type of glass coating is a sputter-coat which is applied in a secondary process.  [top]

All the necessary equipment to retain, operate, and lock or unlock the sash, leaf, or panel within the frame. [top]

The main horizontal member forming the top of a window or door frame. [top]

A horizontal framing member placed over the rough opening of a window to prevent the weight of a wall or roof from resting on the window frame. Also known as lintel. [top]

The transfer of heat from the outside to the inside by means of conduction, convection, and radiation through all surfaces of a house. [top]

The transfer of heat from the inside to the outside by means of conduction, convection, and radiation through all surfaces of a house is considered to be 'heat loss'. [top]

A device (often a metal plate) that conducts and dissipates unwanted heat. Heat sink flashing is sometimes installed under the sill of a frame to bring interior heat to the sill detail of the frame. [top]

The heel dimension refers to the dimension that the frame is ordered to; corresponds to the rough opening but allows room for deflection and shimming, seismic drift etc. [top]

A three or four bar hinge that is typically mounted on both sides of a casement, awning or hopper window. Casement hinges typically allow 60° to 90° opening radius' that can be controlled with a restrictor. [top]

A hardware device consisting of two bodies that are connected to the door frame and the door leaf respectively and joined together by a pin which supports the door and connects it to its frame, thus enabling it to swing open or closed. [top]

Flush door constructed with two skins or door faces separated by stiles and rails at the perimeter. Generally, a honeycomb type support is used inside the door between the two faces. [top]

A window unit with a hinged bottom in which the top of the sash swings inward towards the interior of the building. [top]

A horizontal slider is a window with a movable sash that slides horizontally; also referred to as a gliding window. [top]