Installation of the New Generation VELUX roof windows (GLL)

2,048 views · Published 1 April 2014 · 0:58 · Indexed 25 October 2026

Channel: The VELUX Group · 2014 · Science & Technology

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The New Generation of VELUX roof windows has made installation easier, faster and safer. See how to install the VELUX GLL bottom operated roof window. Two installation heights are available, marked by a red or blue line. Please make sure to have the correct flashing box available before beginning the installation of the VELUX roof windows.

For questions or comments please visit us at:
https://www.velux.com/contact-us

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