The perforated supply diffuser with star pattern controllers (PDSP) is extremely versatile, available in a wide variety of sizes with a full selection of frame and mounting styles.

The star pattern pattern deflectors produce a tight horizontal air pattern that is field adjustable between a standard 4-way square and a 4-way side star discharge pattern. Curved blade deflectors mounted at the diffuser neck maintain a consistent horizontal pattern, even at low flow rates, making it an ideal choice for VAV applications.