* Square ceiling diffuser is an integrated design ,where the diffuser frame is punched and stamped in one piece with the diffuser core. The diffuser is designed to deliver air equally in all 4 directions .

* 4 way diffuser is usually with damper for supply air .Damper is optional.It fixed rigidly to the frame by aluminium rivets .Fixing by spring clips as option.

* SCD-VA,SCD-VB SCD-VC are the three kinds of square air diffusers which the airflow flatly, they are straight-edge diffuser, chamfer-frame diffuser, and new type of emovable diffuser.

* They are mainly used for studios, hospitals, theaters, classrooms, concert halls, libraries, recreation hall, theater lounge, general offices, shops, hotels, restaurants and gymnasium, and so on.

* In order to avoid the noise interference in a variety of environment, except determine the wind speed by the neck according to performance table, it should consider the installing height and surroundings.

 Selection Tables: