The RS PRO external louvre (ventilation grille) is suited for air intake and discharge in building elevations and measures 351x351mm. They are often utilised as an architectural feature in modern building designs, with their versatility lending itself to configurations of circular or trapezoid designs. It has a parallel slat configuration and the housing is made from aluminium. It has blades with an internal rain lip set at a pitch of 38mm and a 45° angle.

Free area, 50% approximately
Brown in colour
Undrilled flanges 32mm wide with fully welded and finished mitred corners