Glossary - E

A Glossary of window terminology

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EnduraHardware™

Pella’s collection of hardware that offers superior corrosion resistance and is backed by a 10-year warranty. 

Extrusion

A form produced by forcing material through a die.

E-Gard®
Brand name for specially coated, operating hardware that helps to resist oxidation and corrosion.

Egress Code
The minimum opening of a window for people to exit or firefighters to enter a building/dwelling. Different states or regions have different code requirements.

ENERGY STAR®
The ENERGY STAR program is a joint venture between the US Environmental Protection Agency (EPA) and the US Department of Energy (DOE) designed to encourage homeowners to purchase energy-efficient products. Using less energy in our homes reduces the amount of CO2 emissions released into the atmosphere from burning fossil fuels such as coal, oil and natural gas. The advanced components and design in the ClimaTech™ insulated glass package exceed all performance criteria required by the ENERGY STAR program.

EvenForce™
Alside’s brand name for its block and tackle balance system. A balance system is a device for holding the vertically sliding sashes in any desired position within the window mainframe.

Edge Waffle
A wavy distortion of the nailing fin.  

Egress Dual-Arm Operator
A dual-arm operator with a shorter, jointed arm that allows the window to open wider to serve as an exit.  

Egress Hinge
A hinge used in conjunction with certain casement windows to allow a wider opening to meet emergency exit requirements.  

Entrance
The exterior area of a door (usually used for the main or front entrance of a structure) with decorative exterior trim. Trim may include pilasters, entrance head or cap, or a decorative exterior casing.  

Entrance Door
A door that serves as the main entrance of a structure; may be single or paired.  

Entrance Head
The portion of the entrance above the door opening; also called entrance cap or entablature. Commonly used when the head is other than a pediment.  

Exterior Casing
Trim around the exterior of a window or door frame that serves as the boundary moulding for the siding material.