Available with I through 8 slots (one piece).Flow patterns can be easily adjusted even after diffusers are installed.Pattern vanes permits 180 degrees adjustable air pattern, complete flow rate control, including blank-off.Stylish, scratch resistant and non-yellowing.AIR GRILLES linear diffusers are specially designed to suit modern architectural and interior decoration requirements.With a superior horizontal air pattern, it produces the maximum entrainment of room air, generating the air motion required to provide the optimum comfort conditions throughout the occupied zone. It is enamel coated and oven-baked for scratch resistant.ĪLD Linear Diffuser is a very popular choice for many cooling, heating and ventilating application, and it is designed to handle large volumes of air with good throw patterns, acceptable pressure drops and sound levels. The Linear Diffuser is designed to withstand rough handling without distortion. Model ALD series Linear diffusers are constructed from highly corrosion resistant extruded aluminium.