Specifications – Series CDD
Louvered Face Directional Diffuser 
CDD-1 – Surface Mount
CDD-2 – Bevel Drop Surface Mount 
CDD-6 – T-bar Lay-in
CDD-8 – Tegular Lay-in
CDD-9 – Bolt Slot/Donn Fineline Lay-in

Air Outlets shall be model CDD-S manufactured by GREENHECK and shall be constructed of steel.
Air Outlets shall be model CDD-AL manufactured by GREENHECK and shall be constructed of Aluminum. 

Units shall consist of a fixed pattern louvered core fastened into a border with spring loaded latches. Core shall be removable without the use of tools. Outlets shall be engineered to perform in variable volume systems and include deflector blades with a horizontal lip to provide longer throw distances. 

Outlets shall be available in 1, 2-way opposite, 2-way corner, 3, and 4-way directional air patterns. 

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

For Surface mounting:
Units shall be designed for surface mounting applications and be provided with counter sunk screw holes on the face of the device.

For T-Bar Lay-in:
Units shall be designed to integrate into the specified ceiling system. 

Options

Adjustable Pattern (horizontal to vertical)
Outlets shall include adjustable air pattern deflector blades that allows the air pattern to be set from vertical to horizontal (Optional APD Air Pattern Deflectors). Air pattern deflector blades shall be accessible from the face and the diffuser and adjustable without the use of tools.

IV Induction Vanes
Units shall include IV induction vanes factory mounted onto the back side of the deflector vanes. IV vanes shall increase the induction rate of the diffuser.

Accessories

Optional Dampers
Aluminum D5A or Steel D5 opposed blade dampers shall be provided. Damper shall be adjusted using a handle accessible through the face of the diffuser. Screwdriver slot operators are not allowed.

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.