Glazing

The process of applying or installing glass into a window sash or door panel. Also refers to the type of glass used in the process.

 

Glazing stop

Moulding around the interior or exterior of a window sash or door panel that holds the glass in place. Also called a glass stop.

 

Grilles

Small wood or metal bars that visually divide window or door glass, giving glass the appearance of multiple panes of glass. Available in profiles and patterns with the option of removable or permanent grilles.

 

Grilles-between-the-glass

Grilles permanently installed between the panes of insulating glass.

 

Head

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

 

Header

Horizontal framing member placed over the rough opening of a window or door to prevent the weight of the wall or roof from resting on the window frame.

 

Head flashing

Flashing installed in a wall over a window.

 

HurricaneShield^®

Pella’s impact-resistant glass ― an advanced polymer layer sandwiched between two layers of glass provides exceptional strength – the glass is able to withstand an impact equivalent to that of a 2-by-4 traveling at 50 feet per second. Also dramatically cuts outside noise and harmful UV rays and offers added protection against intruders and forced entry.

 

Impact-resistant glass

See “HurricaneShield”.

 

Insulating glass

Combination of two or more panes of glass with a hermetically sealed airspace in between. May be filled with an inert gas, such as argon to further reduce heat transfer, making a home more energy-efficient and comfortable year round.

 

In-swing door

Door that opens into a room rather than the exterior.

 

Integral Light Technology^®

Developed by Pella ― grilles are permanently bonded to the inside and outside of energy efficient insulating glass with a non-glare foam spacer between the panes of glass to give the illusion of individual panes of glass. Provides the look of true divided light with the performance of insulating glass.

 

Integrated crank with fold-away handle

A crank that improves operation and aesthetics on Pella^® casement and awning windows. Won’t interfere with roomside window treatments.