Slot vents: Slot vents are designed to provide narrow ventilation openings above and/or below a window with interior and exterior vents. Type P and Type LS. Type P is suitable for indoor use, while type LS is mainly used outdoors. These grilles are ideal for use as a set. The sizes of the different types are matched with each other. These grilles are available in white and plain aluminium as standard. If required, these grilles can be produced in any desired length. Can be combined with the 'LS' slot vent.