egress window
a window with specific release hardware and minimum clear opening size to allow occupants to escape through the window in case of a fire.
back to top

electrostatic
a painting process by which the aluminum is grounded and the paint carries a positive electric current. This creates a magnetic attraction between the paint and the aluminum allowing for uniform paint coverage on extrusion surfaces that are exposed when the assembled window is installed and closed.
back to top

end dam
used to close the ends of a subsill so the water will not leak out the ends. It makes the subsill a complete water trough allowing it to collect excess water and drain it to the exterior.
back to top

EPDM
Ethylene Propylene Diene Monomer – a modest-cost weather-resistant synthetic rubber from which many flexible gaskets for windows are made.
back to top

expansion mullion
self-mulling window frame jambs that, when slipped together, permit expansion and contraction while preserving strength and watertightness. This is particularly important on large runs of windows, since aluminum will expand or contract 1/8" in 8’ in a 100 degree temperature difference.
back to top

exterior glazed
glass glazed from the exterior of the building.
back to top

extrude
the process of shaping aluminum or vinyl by forcing it through a die.
back to top

extrusion
the finished form after pushing aluminum or vinyl through the die.
back to top