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

Individually adjustable curved blade pattern controllers are available in fixed 1, 2, 2-way corner, 3 and 4-way air patterns. The adjustable curved blades provide total flexibility in pattern adjustment from horizontal to vertical, as well as low pressure drop and noise levels. To adjust between horizontal and vertical air patterns, simply adjust the individual curved blades to a horizontal position for horizontal throw and vertical position for vertical throw