Greenheck CDIR Industrial Round Ceiling Diffuser

Model: CDIR

Round Neck - Adjustable Vertical Air Flow

Product Features

Excellent choice for high-capacity applications such as factories, gymnasiums, theaters, and convention halls.
Discharge pattern is easily adjusted from vertical to horizontal with an adjustment ring.
Diffuser can effectively be applied for either spot heating or cooling.
In the horizontal setting, the unit provides tight ceiling patterns, excellent for VAV applications.
Outer cone design guards against ceiling smudging in horizontal position.

Finishes

01 - White (Note: White Finish is suitable for a primer coat if field painting is required.)
03 - Black
02 - Satin Silver
24 - Mill
28 - Custom Color

Optional Accessories

G3 - Equalizing Damper
SC - Saftey Chain

CFD Throw Pattern Visualization

A visualization of the airflow pattern from a ceiling view, showing temperature distribution (FPM units) with a central hot spot and cooler surrounding areas, indicating adjustable airflow.

Dimensions and Specifications

Side View Diagram

A diagram illustrating the side profile of the diffuser, showing key dimensions labeled A through F. It includes an "Outer Cone," "Opening Size (D)," "Neck Size (A)," and an "Eyelet Bolt For Adjustment." The overall size is labeled (B).

Face View Diagram

A diagram showing the front view of the diffuser, highlighting the adjustable blades and the overall circular design.

Dimensional Data

Size	A (Neck Size)	B (Overall Size)	C	D (Opening Size)	E	F
6	5 3/4	17 1/4	2 1/8	6 3/4	1 1/8	1 1/8
8	7 3/4	17 1/4	2 1/8	8 3/4	1 1/8	1 1/4
10	9 3/4	20 1/4	2 5/8	10 3/4	1 1/4	1 3/4
12	11 3/4	22 1/4	2 5/8	12 3/4	1 1/4	1 3/4
14	13 3/4	29 1/2	2 5/8	14 3/4	1 1/4	2 3/8
16	15 3/4	29 1/2	2 3/4	16 3/4	1 1/4	2 3/8
18	17 3/4	33 1/2	3 5/8	18 3/4	1 1/4	2 1/2
20	19 3/4	36 3/4	3 5/8	20 3/4	1	2 1/2
24	23 3/4	40 3/4	3 5/8	24 3/4	1	2 1/2
30	29 3/4	48 3/4	3 5/8	30 3/4	1	2 1/2

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