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  Model PAC - Perforated Diffuser with Modular Core & Individually Adjustable Curved Blades  
  • PAC cores are adjustable to provide a horizontal or vertical air discharge pattern
  • Individually adjustable core blades allow proportioning of air thru each of the 4 cores for throw control
  • Excellent VAV characteristics for maintaining pattern at reduced airflow
  • Designed for heating, cooling, and ventilating.
Product Features
  • Arctic white unit including face, backpan, and controllers
  • Cores CAN BE field removed and rotated for any blow pattern, without changes in sound or pressure loss.
  • 4 cores consisting of individually adjustable curved blades that are neck mounted and off the face to help mask appearance from the room
  • Core blades are designed for rotation, and do not consist of bending metal to adjust.
  • Vertically projected air pattern is achievable by rotating deflector blades down.
  • Removable perforated face uses concealed spring clips. Pattern is 3/16” diameter holes on 1/4” centers, 50% free area
  • Round neck sizes 6” thru 16” diameters, square neck sizes from 6” x 6” up to 16” x 16”
  • 5 frame styles for lay-in T-bar, surface mount, concealed spline, tegular, and 9/16” narrow slot grid systems
  • Model VD butterfly style volume control dampers for round necks
  • Model OB1 opposed blade volume control dampers for square necks
  • Aluminum or stainless steel construction
  • Black backpan and controllers
Features at a Glance

Model Features Mounting Size
24x24 Other
PAC-L Round
15/16" Lay-In T-Bar
PAC-L9 9/16" Lay-In T-Bar  
PAC-F Surface Mounted
PAC-D 9/16" Narrow Slot  
PAC-T Tegular  
PAC-C Concealed Spline  

OBD - Opposed Blade Volume Control Damper
SRA - Square to Round Adapter
VD - Butterfly Volume Control Damper
LD - Louver Damper
TBF - T-Bar Mounting Frame
CED - Equalizing Deflector