Desiccant Rotors International (DRI), part of the Gurgaon-based Pahwa Enterprises Group, expects it manufacturing facility at Manesar to be up and running by November this year. The Manesar plant will have the capacity to manufacture 1,500 units of treated fresh air (TFA) units. “There are about 400 registered green buildings that require mandated TFA installations, which hold promise for us,” Rahul Aeron, national sales head (heat recovery wheels and TFA), told Business Standard. DRI, which bagged a Rs 3-crore contract to install its TFA units at the eight stadia that would play host to the CommonWealth Games 2010 in New Delhi, posted Rs 100 crore revenues last year.