en espaol

Home > Products > NR-B

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"  NR-B Download  Catalog  Submittal Sheet (Inch / Metric)  Performance Data (Inch / Metric)  Revit Files  High Resolution Picture  Installation Instruction 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) Related Product: BS Butterfly Damper >> Linked Airfoil Blades

Endeavor Talent Agency: Beverly Hills, CA (RHV10) Toy Loft: Los Angeles, CA (NR12B) Excelsior Caffe: Tokyo, Japan (RHV12)

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.

Home > Products > BS
	BS Download  Catalog  Submittal Sheet (Inch / Metric)  High Resolution Picture
Model BS damper with multiple blades is designed for air volume control for round ducts. Continuously adjustable from the face with a screwdriver for quick and easy volume control just by twisting until the desired setting is reached. The multiple blades provide more precise control. All-steel construction for durability. Material  Heavy-Gauge Steel Finish  Black Sizes  6" 8" 10" 12" 14" 16" 20" 24" *Note: Not for use with flexible ducts.
Model BS Dimensions (PDF Version) MODEL DUCT SIZE A B C BS 6 6" 5 11/16 22/32 22/32 BS 8 8" 7 21/32 3/32 22/32 BS 10 10" 9 5/8 19/32 22/32 BS 12 12" 11 5/8 1 1/16 22/32 BS 14 14" 13 5/8 1 9/16 22/32 BS 16 16" 15 9/16 2 1/32 22/32 BS 20 20" 19 1/2 3 1/32 22/32 BS 24 24" 23 7/16 4 1/32 22/32 Dimensions are in inches. Product information is Subject to Change Without Notice