Velux GBL MK04 Roof Window 78cm/98cm 2015 Low Pitch Roof Window centre pivot

Model Code: GBL MK04 2015. The "GBL" indicates a low-pitch (L) white-painted (B, technically L for pine but GBL is the low-pitch white painted model) centre-pivot (G) window. The "MK04" is the size code.

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