Maximise roof top views and ventilation

VELUX GPL is an openable, dual action roof window designed for in-reach applications and developed for use in attics and lofts to maximise roof top views and ventilation.

Product Features

Opens in two ways: the bottom handle allows for top-hung opening; while a short pull on the top control bar operates the filtered vent flap for passive ventilation even while the window is shut. A longer pull allows the sash to rotate 180° for ease of cleaning the outer pane from inside the room.
White pre-painted pine sash and frame
Complete with outer aluminium cappings and flashings for tiled roofs.
Available in 5 sizes
Laminated double glazing as standard
Insect screen available as extra

Technical Performance

U-value †	Solar Heat Gain Co-effecient †	Bushfire^	Heat Block	WERS max 5 stars (summer rating)	Australian standards
Skylight 1.30‡ Glass only 1.00	Skylight 0.31 Glass only 0.30	BAL40	Approx. 70%		AS4285‡, AS1288 AS3959^, AS1530.1††

Note: BCA 2013 Vol 1 & 2 regulations (Prevention of Falls from Windows – Balustrades & Barriers): contact Skydome Hunter Coast for information relating to restrictor devices for within-reach opening skylights.

^Bushfire testing applicable to GPL in roof pitch 18°-55°. Roof window only. Custom-made flashing required. Roof window tested in closed position, additional mesh protection may be required for opening apertures (consult local council). ††Assessed in closed position.

GPL Frame and Glazing Dimensions


New Product/Size Code	CK04	MK04	MK06	MK08	SK06
Old Code Pre June 2015	C04	M04	M06	M08	S06
Overall Frame Size WxH mm	550x980	780x980	780x1180	780x1400	1140x1180
Internal Glass Size WxH mm	371x783	601x783	601x983	601x1203	961x983
Daylight Area M²	0.29	0.47	0.59	0.72	0.95
Ventilation Area M²	0.39	0.58	0.72	0.87	1.09
2076 Laminated Glazing as Standard
Weight in Kg*	35.4	41.5	46.8	53.3	61.0