The Timloc Black Rafter Roll (400mm, 6m) is a roll formed eaves vent and roll-out rafter tray designed to keep your roof well ventilated, preventing condensation build-up that can seriously damage your home and property. Both new build and refurbishment projects are ideal applications. It suits pitched roof eaves ventilation on standard pitched roofs of 15° or more where the roof void is an attic or loft space, fitting rafter spacings between 400mm and 600mm centres.