400x100mm / 16x4" High-Quality Air Vent Grille Ensures Efficient Ventilation Wherever you Need it - in the Bathroom, Kitchen, Garage, Outdoors, etc.With Insect Protection Net / Modern DesignSolid Stamped Metal Construction With Recessed Screw Holes (SCREWS NOT INCLUDED)Exellent To Cover Wall Or Ceiling Openings And Ducting VentsEasy surface mounting / Internal and external mounting.400x100mm / 16x4" High-Quality Air Vent Grille Ensures Efficient Ventilation Wherever you Need it - in the Bathroom, Kitchen, Garage, Outdoors, etc. With Insect Protection Net / Modern Design Solid Stamped Metal Construction With Recessed Screw Holes (SCREWS NOT INCLUDED) Exellent To Cover Wall Or Ceiling Openings And Ducting Vents Easy surface mounting / Internal and external mounting - Made by Europlast