The Sand Trap Louver is used as pre-filter for the protection of air conditioning plants in area exposed to extreme levels of industrial pollution. It has a high degree of s eparation capability of sand and large dust particles, even in case of high dust concentrations. The vertically arranged sections and holes for sand drainage ensure the sand trap louver is self-cleaning and maintenance-free. The STL is designed to separate large particles at low air velocities, thus avoiding excessive dust loading of conventional filters. It’s not intended as a substitute for conventional supply air filtration plant. For bigger sizes, several sections can be combined to provide any combinations of overall width W or height H. STL with H – 1950 mm to 3900 mm are split on height and supplied with additional sand chute, loose for fitting on site by others. The additional support for reinforcement and assembly of the sand trap louvers with W – 1950 mm to 3900 mm are also split and supplied with a loose channel section to cap the vertical joint, channel to be fitted on site by others. Single Section Sizes Performance Data – The filtration performance is dependent on the dust type and the velocity of the air. The 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. Fixed with a removable washable extruded aluminum filter with aluminum mesh as the filter media. Filters are available at 12, 25 and 50 mm thickness as required. Total assembly is designed to operate at medium and high velocities with high dust holding capacity at low resistance to air flow. Can be manufactured from G.I or SS as option.