Specifications – Series SD

Perforated Face Spiral Duct Grilles
Model - SDPF

Air Outlets shall be model SDPF manufactured by GREENHECK. Units shall be direct spiral duct-mounted perforated face grilles of aluminum (AL) or Galvanized Steel (S) construction with universal frame (U) or curved frame (C). The units shall be the size and quantity as outlined in the plans and specifications.

Air Outlets shall conform to the duct radius and include a foam gasket around sides and end caps of the unit. Units shall have perforated face with 3/16" diameter holes on 1/4" centers and shall have a 51% free area.

Units shall be provided with counter sunk screw holes on the face for surface mounting.

Damper Accessories (Optional)
Optional opposed blade damper shall be constructed of aluminum (model DA) or extruded aluminum  (model OBDE), damper must be operable from the face of the diffuser.

Optional air extractor (air scoop) shall be mounted on the back of the grille. Extractor shall be face operated using an extractor adjustment rod.

Performance Specification
The manufacturer shall provide published performance data. Data shall be tested in accordance to ANSI/ASHRAE Standard 70- 2006

Paint Specification
Process shall be anodic electrodeposition using an anodic acrylic paint. Units shall undergo pre‐ treatment including a pressurized spray stage using an alkaline cleaner and a de‐ionized water rinse.