The plastic ventilation grilles come in nearly 20 types of front finishes with unique and elegant looks, with a range of additional functionalities such as screens and/or louvres. The synthetic grilles are available in various shapes: round, square, rectangular, and in a wide range of sizes from ø 78 mm to 315 mm (for the round type) and from 140 mm x 140 mm to 595 mm x 595 mm (for the rectangular type). Non-standard versions include grilles for connecting ventilation hoods and ones with rectangular front sections for installation in round ducting. Depending on the grille type, the following finishes are available: white, silver, chrome, satin, brown, black and graphite.