Leadworx full length window trays are designed to fit the window opening size you select, to stop water leaking into the structure of the building.
The window trays are designed with enough cill depth to be turned up behind the window in situ forming your watertight tray. The front turns down to cover and protect the cladding and any fixings.
The window tray cill depth (into the reveal) is 150mm and the front cover lap (down over cladding / tiles) is 150mm