Dundas Jafine DF6WZW White Round Diffuser, 6" Dundas Jafine air diffusers are ideal for in-wall or suspended Ceiling applications This product allows for fresh airflow from room to room and features a lock nut for secure air flow balancing, as well as a flange collar and locking ring for suspended Ceiling applications The air diffusers require no studs for installation and come with a smooth clean finish which allows for easy cleaning on a regular basis