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Seiho's model NR-B utilizes a widely-spaced blade design for high capacity, long throw air flow in a double deflection grille. The linked blades facilitate air direction control. The NR-B can be wall mounted securely with its mounting bracket. Excellent for use where high volume air streams are needed such as airport concourses, hotel lobbies, and convention halls.

Material
 Heavy-Gauge Aluminum
Finish
 Gloss White or Mill Finish (Custom Colors Available)
Sizes
 6" 8" 10" 12" 14" 16" 20" 24"
Features
 Contemporary Design
 Long Air Throws
 Wide Dispersion Patterns
 Double Deflection Design
 Concealed Mounting Mechanism
 Available for Standard Duct Sizes
 Heavy Gauge Aluminum Body
 Extruded Aluminum Airfoil Blades

Adjustable Blades
The NR-B's front and rear linked blades are independently adjustable to provide numerous dispersion patterns.

Airflow Smoke Patterns Tests (YouTube)

 NR-B Download
 Catalog
 Submittal Sheet (Inch / Metric)
 Performance Data (Inch / Metric)
 Revit Files
 High Resolution Picture
 Installation Instruction

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Model NR-B Dimensions (PDF Version)

MODEL DUCT
SIZE
A B C D E F G
NR 6B 6" 7 5/8 5 13/16 1 7/32 4 9/32 15/32 5 1/2 1 5/16
NR 8B 8" 10 7 25/32 1 13/32 4 9/32 15/32 5 1/2 1 7/16
NR 10B 10" 12 5/8 9 3/4 1 25/32 4 13/32 19/32 5 1/2 1 7/8
NR 12B 12" 14 19/32 11 23/32 1 25/32 4 13/32 19/32 5 1/2 1 29/32
NR 14B 14" 16 9/16 13 11/16 1 25/32 4 13/32 19/32 5 1/2 1 29/32
NR 16B 16" 18 17/32 15 21/32 1 25/32 4 13/32 19/32 5 1/2 1 29/32
NR 20B 20" 23 5/8 19 23/32 2 3/8 4 31/32 29/32 6 11/16 1 29/32
NR 24B 24" 27 9/16 23 11/16 2 3/8 4 31/32 29/32 6 11/16 1 29/32
Dimensions are in inches. Product information is Subject to Change Without Notice


Performance Data (PDF Version)

SIZE Neck Velocity (fpm) 250 500 750 1000 1250 1500
Velocity Pressure (in.,wg) 0.004 0.016 0.035 0.062 0.097 0.140
Total Pressure 0.023 0.029 0.076 0.096 0.165 0.200 0.247 0.292 0.387 0.417 0.540 0.570
Deflection 0 22.5 0 22.5 0 22.5 0 22.5 0 22.5 0 22.5
6 Neck Area
sq.ft
0.196
CFM 50 100 150 200 250 300
NC - - - - - 20 24 34 32 40 37 43
Throw 10 9 13 12 17 15 19 17 22 19 24 22
8 Neck Area
sq.ft
0.349
CFM 90 180 270 350 440 530
NC - - - 18 22 26 25 32 40
Throw 13 12 18 17 22 20 25 23 27 25 31 28
10 Neck Area
sq.ft
0.545
CFM 140 280 410 550 690 820
NC - - - 15 15 21 20 26 26 33
Throw 16 14 23 20 28 25 31 28 36 32 36 33
12 Neck Area
sq.ft
0.785
CFM 200 400 590 790 990 1180
NC - - - - 16 22 22 32 31 38 35 48
Throw 19 17 27 24 32 30 38 34 41 39 43 41
14 Neck Area
sq.ft
1.069
CFM 270 540 810 1070 1340 1610
NC - - - - 16 29 24 32 29 34 37 45
Throw 22 21 32 28 38 35 44 40 49 44 54 47
16 Neck Area
sq.ft
1.396
CFM 350 700 1050 1400 1750 2100
NC - - - - 19 27 29 34 32 41 37 45
Throw 25 23 36 31 43 39 51 45 56 52 63 55
20 Neck Area
sq.ft
2.182
CFM 550 1100 1640 2190 2730 3280
NC - - - - 19 27 30 34 32 40 38 47
Throw 31 27 44 41 54 49 63 57 70 64 74 71
24 Neck Area
sq.ft
3.142
CFM 790 1580 2360 3150 3930 4720
NC - - - - 20 26 30 34 33 41 39 48
Throw 33 28 54 49 65 58 74 68 83 78 92 84
THE THROW VALUES ARE BASED ON A 50 FPM TERMINAL VELOCITY.
DASHED LINE IN SP BOX INDICATES STATIC PRESSURE IS LESS THAN 0.01 IN.W.G.
DASHED LINE IN NC BOX INDICATES NOISE LEVEL IS LESS THAN 20.
NC LEVEL IS BASED ON 10dB ROOM ATTENUATION(PWL RE:10-12 WATTS) WITH ONE DIFFUSER OPERATING.

*Seiho International reserves the right to make changes without prior notice.
*This performance data is proprietary to Seiho International, Inc., and shall not be used except as expressly authorized by the company.


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