Recessed installations offer a more sleek, streamlined appearance, sitting 40mm deeper in the roof structure. Recessed installations also offer greater energy efficiency, and when installed with the appropriate VELUX insulation collar actually offer a lower certified u-value.

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Please note, the structural opening size required for your window will differ depending on which flashing kit is used, remember to consult the instruction manual supplied with your flashing prior to setting out the roof for installation.