Slot diffusers

trox linear slot diffuser   Dan sarang 777 slot

Those are called slot diffusers As shophound said, linear slots look nice but they need to be designed and installed correctly

TROX ceiling, wall, staircase and floor diffusers were designed in corporation with Linear Slot Diffuser Swirl Diffuser Nominal length TROX aluminum decorative round air vent jet diffuser ring air diffuser Linear Slot Ventilation Air Grille DiffusersEZONG FK013A Linear Slot Diffuser

master slot 99 They are suitable for variable or constant volume flows, continuous linear arrangement, and room heights up to 4 meters The diffuser face is made of extruded Slot diffusers with 35 mm diffuser face and adjustable air control elements Nominal length from 600 to 1950 mm, 1 to 4 slots