The Sand Trap Louver frame and blades are of high quality extruded aluminum profiled construction with the advantages of corrosion resistance and rigidity. Composed two sets of inverted U-channels mounted vertically on two opposite rows. Drain holes of diameter 20 mm are provided in two rows at the bottom of the louver for emptying filtered sand and dust. Can be manufactured from G.I or SS as option. Designed to separate sand and dust from the air stream. Generally used for ventilation applications and at inlet duct of air handling unit. Bird screen to protect from the ingress of large objects