HVAC grilles come in a variety of styles. Other options may also include Perforated, bar, floor, and extruded grilles. Custom plates, radiator covers, mitered corners, and access doors are also available in the market. Perforated grilles, bar grilles, and floor grilles feature specifically formed apertures to allow air to pass. 

These forms might be bricks, diamonds, bullets, or shells. Instead, people commonly use slats in standard industrial grilles. Companies design sound products with an acoustically transparent perforated liner and acoustical-grade fibrous material. They frequently produce and distribute a wide variety of HVAC items.

Examples include air handlers, central air conditioning systems, dampers and louvers, energy and heat recovery ventilators, evaporative coolers, fireplaces, heat pumps, and heating furnaces. In addition to this, Diffuser and grille suppliers may also sell HVAC chillers, HVAC ductwork, and especially HVAC equipment, as well as room air conditioners and vents and venting systems.