An inert, odourless, colourless gas used to replace air between glass panes. Being heavier than air, it slows heat loss.
A window hinged along the top. Rain can't get in when the window is open.
A spring or weight that holds the sash in any vertical location.
A combination of three windows that extends outward from the wall, generally joined at 30- or 45-degree angles.
A combination of three to five windows that extend outwards from the house to create a semicircle or arc.
The device that pulls the sash together when being closed.
A window hinged on one side, and opens outward like a door for superior ventilation.
Tiny spaces within a North Star sash or frame that act like insulating air pockets and add strength.
Two layers of glass separated by an air space.
A window with two operating sashes that slide vertically. Single hung has one moving sash.
A laboratory tests the energy-saving performance of a window and assigns a rating of how effectively the window controls energy loss.
Not to be confused with roll-formed screens. Extruded screening is pressed through a form.
Joining materials by melting with extreme heat. Separate parts take on the characteristic of one solid piece.
Decorative bars installed between panes to create the look of smaller panes.
The amount of heat gained from sunlight. A low number on a performance test indicates a superior ability to block out heat.
A bottom-hinged sash that opens inward.
A window in which the sash moves horizontally.
Extension on the outside of a new window that makes it easier to install siding.
A pane of glass.
Glass with a transparent coating that allows light to pass through but reflects infrared or heat.
The vertical or horizontal bar connecting two or more windows.
An extrusion attached to the window and used to attach the unit to the opening.
Glass door that slides on rollers to open and close.
Window with no moving sash.
Resistance. Measures how well a material impedes heat flow. Bigger is better with this number.
The frame around a pane of glass.
The silicone spacer around the interior perimeter of North Star windows. Keeps panes the right space apart and boosts energy savings.
Measurement of heat transmitted through a material. The lower the number, the better the insulating quality.