It's mainly used for entrance of fresh air and exit of exhaust air in the external wall for air-conditioning systems. . Also Linear diffusers in 1, 2 and 3 slots. As one of the most professional Air conditioner ventilation aluminum Linear Slot Diffuser manufacturers and suppliers in China, we're featured by quality. “Going long” with INV air diffusers has no limits, and, opposed to football, it's not a Hail Mary prayer at all. Explore our collection of high-quality AC vent covers at. HVAC Ventilaition Escape de aluminio Desmontable Ac Slot Grill Suministro de aire Puerta con. We carry a wide selection of HVAC supplies, equipment, and parts at competitive prices. See more ideas about ceiling design, crown molding, ceiling vents. 70+ sizes of Modern Ac Vent Covers from 6x4 to 30x24 that replaces your traditional grilles. Jul 28, - Explore Joseph Robinson's board "Molding" on Pinterest. Advantage Mechanical Supply is your one stop shop for all things. It looks buautiful with aluminum anodized. Our linear air diffusers are. Shop for Standard Linear Slot Diffuser, Register Grille for Ceiling, Walls & Floors at Ubuy Aruba.