Envirotech Systems Limited is swiftly becoming a favourite Sand Trap Louver Manufacturer and a supplier of public-health approved ,functionable louvers dust proof or air proof HVC system usage. Our Royals louvers are designed to remove large dust particles as much as possible without compromising in optimum light condition or down line equipment. They are heavy duty and low maintenance and can be used in abrasive and hostile conditions. With a high level of machine control and a solid build, they are used in houses, business and industry. Trust Envirotech Systems Limited to provide reliable, efficient and competitively priced sand trap louvers. For a complete range, check our site and contact us today for more information.