Fenestration Encyclopedia

CE Marking – Conformité Européenne, meaning “European Conformity” or “European Community”

DGU -Double Glazed Unit

DoP – Declaration of Performance

Fenestration – Fenestration refers to the design and/or disposition of openings in a building or wall envelope. Fenestration products typically include: windows, doors, louvers, vents, wall panels, skylights, storefronts, curtain walls, and slope glazed systems.

GGF – Glass and Glazing Federation

G -Value – Window Solar Factor: It measures the amount of heat gain from sunlight.

hEN – Harmonised European Standard

FIT – Fabricator Installer Trade –  The Fit Show

IGU – Insulated Glass Unit

U-Value – U-Value is a way of measuring the thermal efficiency of a material/product such as windows and doors

W/m2K – Watts per metre-squared kelvin

WER – Window Energy Rating


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