Since hanging Grille Product Overview 1, since the vertical Grille for positive pressure room auto exhaust, since the vertical Grille specifications, the exhaust pipe to the outlet and the ventilation shaft of the outlet and the like. Normally vent louvers by weight and natural droop, isolated indoor and outdoor air exchange, since the vertical dimension Grille, when the indoor air pressure is greater than the outside air pressure, air will blow open outward exhaust louvers, Karamay from hanging Grille, conversely When indoor air pressure is less than to outdoor air pressure, air flow can not reverse flow into the room, the air one-way check effect. When the indoor air pressure is greater than the outside air pressure, air will exhaust louvers blowing outward from the vertical Grille specifications |. Yanda air conditioning (certified) | Karamay from vertical Grille by Wu County Yanda air-conditioning plant. Wu County Yanda air-conditioning plant (www.wcydkt.com) (www.wcydkt.com) Shandong Dezhou, heat, refrigeration and air conditioning equipment leader, over the years, the company is implementing the scientific management, innovation and development, honesty and trustworthiness policy, and satisfy customer needs. In Yanda air conditioning leadership with the staff warmly welcome all inquiries negotiations to create Yanda air conditioning better future.