The product information referenced in this website use a product configuration number. Configuration numbers denote a blower wheel’s type, diameter, width and, in some cases, the number of inlets. Fans are denoted by a type, style and number of blades. Part numbers denote the specific characteristics of an individual wheel or fan and include complete information, such as material used, hub type and size, and rotation. Part numbers are used internally for documentation control and are necessary when ordering a specific wheel or fan.
Configuration and Style Details
| Blower Wheels | Code | Diameter In: | Width In: | Intake: | |
| Forward Curved Centrifugal Wheels | |||||
| Key Rivet | F | millimeters | millimeters | Single or Double | |
| Strip Wheel | V | inches* | inches* | Single or Double | |
| Cross Flow/Tangential Wheels | X | millimeters | millimeters | ||
| Backward Inclined Centrifugal Wheels | |||||
| with Flat Inlet | B | inches* | inches* | ||
| With Conical | B | millimeters | millimeters | ||
| Mixed Flow | M | inches* | inches* | ||
*without decimal
| Fans | Code | Styles | No. of Blades | |
| Axial Fans | ||||
| Small Diameter | A | B | 10 | |
| S | 10 | |||
| W | 20 | |||
| Large Diameter | A | O4 | 4 | |
| O5 | 5 | |||
| W5 | 5 | |||
| O6 | 6 | |||
| Radial Fans | ||||
| All | F | R | 12 | |
| Y | 12 | |||
| RF | 12 | |||
| H | 11 | |||
| R9 | 9 | |||
| M | 6,10,11 | |||