| Code number | Field | |
|---|---|---|
| Product family |
R = Round Dampers |
R |
| Application |
P = Pressure Relief Backdraft |
P |
| Shroud Type | G = Galvanized | G |
| Diameter |
06 to 10-inches, 1 inch increments 12 to 24-inches, 2 inch increments |
d |
| Actuator | N = None | N |