Specifications - Series CDP – Induction Core
Square Face Plaque Diffuser Induction Core and Round Neck 

CDP-HI-1 - Surface Mount with HI Induction Core
CDP-HI-6 - T-bar Lay-in with HI Induction Core
CDP-HI-7 - Concealed Spline with HI Induction Core 
CDP-HI-9 - Donn Fineline Lay-in with HI Induction Core

Air outlets shall be model CDP-HI-S manufactured by GREENHECK and shall be constructed of steel.
Air outlets shall be model CDP-HI-AL manufactured by GREENHECK and shall be constructed of aluminum.

CDP-LF-1 - Surface Mount with Low Flow Core
CDP-LF-6 - T-bar Lay-in with Low Flow Core
CDP-LF-7 - Concealed Spline with Low Flow Core 
CDP-LF-9 - Donn Fineline Lay-in with Low Flow Core

Air outlets shall be model CDP-LF-S manufactured by GREENHECK and shall be constructed of steel.
Air outlets shall be model CDP-LF-AL manufactured by GREENHECK and shall be constructed of aluminum.

Units shall be square with a formed backpan, flat panel face, and a high induction inner core assembly. The face panel of the outlet shall project no more than 1/4" below the ceiling grid. 

Units shall be square with a formed backpan, flat panel face, and an ultra-low flow inner core assembly. The face panel of the outlet shall project no more than 1/4" below the ceiling grid. 

The units shall be the size and quantity as outline in the plans and specifications.

Inlets shall be drawn into the backpan of the diffuser. Welded inlets are not acceptable. Diffusers shall include seismic tabs drawn into the backpan.

Face panel shall be held in place with hooks are secured through the backpan and be removable without the aid of tools. Units with face panels held in place with springs or clips are not acceptable.

Inner core assembly shall be steel and include a gasket between the core and the backpan. The high induction core assembly shall produce a four-way discharge pattern through a series of nozzles to maximize induction and comfort. ADPI for the diffuser shall be a minimum of 97 in typical applications.
Units shall be designed to integrate into the specified ceiling system.

Optional Dampers and Accessories

Butterfly Damper
GREENHECK model BDS aluminum, round butterfly type dampers shall be provided. Damper shall consist of two butterfly style blades that can be adjusted from full open to full closed. Damper shall be adjusted with a screwdriver slot that can be assessed through the face of the diffuser.

Radial Shutter Damper
GREENHECK model RSD steel round radial shutter damper shall be provided. Damper shall consist of gang operated radial blades that slide perpendicular to air flow direction. The damper shall be adjusted from full open to full closed. Damper shall be adjusted with a screwdriver slot that can be assessed through the face of the diffuser.

Equalizing Grid
GREENHECK model G3 aluminum, round equalizing grid shall be provided. Equalizing grid shall consist of 1/2" x 1/2" x 1/2" aluminum cubed core mounting in an aluminum frame.

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.