SPD HI Series

Product Information

View Performance Data SPD HI

Radial Horizontal Air Pattern
Steel Construction SPD HI

PRICE SPD HI Series High Induction Square Plaque Diffuser is designed to provide large volumes of air to spaces that need to satisfy both architectural appeal and air distribution performance criteria. A high induction chamber hidden behind the simple, clean and unobtrusive plaque is the key to the great performance that this diffuser has to offer.

High velocity air discharged through the openings in the induction chamber travels in a tight radial pattern along the ceiling while efficiently inducing and mixing with room air. The exceptional horizontal air pattern and rapid mixing of the Price Series SPD HI ensure comfort is maintained in the occupied space in heating as well as in cooling applications. Carefully engineered openings in the chamber provide low noise levels across the diffuser's air flow range without sacrificing its superior air mixing properties.

Model SPD HI


    Product Selection Checklist

  1. Select Inlet diameter based on desired performance characteristics.
  2. Select Finish.
Example: 8" / 24" x 24" / SPD HI / 31 / B12
Application Recommendations:
For Border and Panel recommendations.

Available Module Sizes
24" x 24"
600 x 600


White Powder Coat



For optional and special finishes
see color matrix.

  • Steel construction.
  • Good air mixing and low sound across air flow range.
  • Face panel has smooth edges and rounded off corners to blend with back cone.
  • Back cone is one piece die-formed with smooth, aerodynamically designed surfaces and no corner joints. Helps prevent ceiling smudging.
  • The back cone shape combines with the face panel to deliver a tight 360° radial horizontal air pattern.
  • Face panel is easily installed and removed without special tools.
  • Maintains true 360° horizontal air pattern even at low air volumes making it a good choice for VAV applications.
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