MR3015B vent grille is suitable for a variety of different supply or exhaust applications. This vent grille has no damper to control air flow, so air is left to flow freely. The grille features anodized coating, which makes it weather resistant and suitable for internal or external mounting. Equipped with an insect grid. Made in Europe. We do not know what type of screws you need - so the SCREWS ARE NOT INCLUDED.Legal DisclaimerWe do not know what type of screws you need - so the SCREWS ARE NOT INCLUDED.