The Natural wind ventilatorsuppliers in Chennai completely exhaust hot air by adopting a simple mechanism. Sri Ramana Enterprises has produced lightweight ventilators which are very easy to handle and maintain. The roof ventilator suppliers by Sri Ramana enterprises supports specially grooved ventilators with well-cut vents that protect from rain and dust. It assures of greater efficiency and performance than the normal exhaust fans. http://www.sriramanaenterprises.in/roof-ventilator.php