| Specification | Code Number | Field |
|---|---|---|
| Product Family | R = Round Dampers |
R |
| Application | I = Industrial |
I |
| Shroud/Seal | B =
Galvanized/No Seals N = Galvanized/Neoprene Seals G = Galvanized/Silicone Seals S = 304 Stainless Steel/Silicone Seals |
|
| Diameter | 04 in. through 72 in. in increments of 1 in. |
dd |
| Actuator | M =
Manual Locking Quadrant N = None |