Grille air conditioning system is mainly used to do back vents, louvers anodized surface, straight and smooth, can also be sprayed on request, in the form of the outlet (removable, hinge-type return air louvers, fixed) and specifications Selection of production according to user needs, but also increase with the use of filters, filter can be easily removed for cleaning, dusting. Constant indoor load, the amount required to cold indoor blower is certain. Indoor air relative to the fresh air, the summer temperatures are generally lower, so the use of some air return duct back into the air box, mixed with a small amount of fresh air, cold air into the room made. Hinge return air vent louvers is based on a multi-louvered vents has added a small border entire vent valve in the form of presentation, the border between the blades and start off with ease, ease of installation and replacement filters. And supporting air filters is fixed on the shutter, the shutter flick on both sides of the door, open the trap door, and then withdrawn from the valve when the filter is too close, as long as the shutter push, pull on both sides of the bolt to lock, looks like a flat. The air is divided into two categories: a fixed louvered aluminum hinge linear louvered return air .2 aluminum hinge return air. Our company specializes in all kinds of aluminum outlet production of central air conditioning and ventilation used: single, double Grille, rain Grille, grille outlet, since the vertical vent louvers, square, circular diffuser, exhaust port, being pressure outlet, fire air, swirl diffusers, spherical vents. The company is strong in technology, superior product quality, credit protection, low prices. Our call to discuss!