- 20-gauge galvanized sheet steel shroud
- 16-gauge and 20-gauge blades, based on diameter
- Seals to reduce leakage
- Formed shroud which allows easy insertion into duct work
- One-piece construction that increases rigidity and strength
- Optional factory-installed actuators that reduce installation time
| Part | Construction |
|---|---|
| Shroud | 20-gauge galvanized sheet steel |
| Blade |
4 - 8 in. (102 - 204 mm) diameter 16-gauge galvanized steel, single-piece |
|
9 - 22 in. (229 - 406 mm) diameter 12-gauge galvanized steel, single-piece |
|
| Shaft |
4-8 in. diameter 5/16 in. (8 mm) diameter steel or galvanized wire (1/2 in. adaptor provided when ordered without actuator) |
|
9-22 in. diameter 1/2 in. (13 mm) diameter aluminum |
|
| Washer | Nylon |
| Seal | Closed-cell polyurethane foam tape |
| Specification | Code Number | Field |
|---|---|---|
| Product Family | R = Round Dampers | R |
| Application | B = Balancing - without seals | B |
| Material | G =
Galvanized S = Stainless Steel |
|
| Diameter | 04 to 22 - One inch increments | dd |
| Actuator | B = Bracket with no
Actuator M = Manual Locking Quadrant N = None |
Note: Factory-installed actuators on control dampers only.
| A, in. (mm) | B, in. (mm) | C, in. (mm) |
|---|---|---|
| 4 (102) | 6 (152) | 5.63 (143) |
| 5 (127) | 6 (152) | 6.63 (168) |
| 6 (152) | 6 (152) | 7.63 (194) |
| 7 (178) | 6.75 (171) | 8.63 (219) |
| 8 (204) | 7.75 (197) | 9.63 (244) |
| 9 (229) | 9.75 (248) | 11.69 (297) |
| 10 (254) | 9.75 (248) | 12.69 (322) |
| 12 (305) | 11.75 (298) | 14.69 (373) |
| 14 (356) | 14 (356) | 16.69 (424) |
| 16 (406) | 16 (406) | 18.69 (475) |
Figure 1. RB-2000 Dimensions
Figure 2. Pressure Drop
