SQD and eSQDDirect Drive Square Inline Centrifugal Duct Fan
In-line Duct Fan Series
Model Features
- Exhaust air up to 2,800 CFM in high static pressure applications up to 1" w.g.
- Direct drive units have low sound levels and quiet operation
- Ideal for applications where space is limited
- Non-overloading backward inclined wheel for efficiency at higher static pressures
- AMCA Air and Sound Licensed
- cULus 705 Listed
- Ecowatt® (eSQD Models ONLY)
Model Overview
The SQD square inline duct mounted fan is available in sizes 6 through 15, moving up to 2,800 CFM, with static pressure capability up to 1". eSQD electronically commutated square inline duct mounted fan is available in sizes 8, 10, and 12. SQD units are the perfect selection for clean air applications where space is a leading consideration. The compact housing with removable access doors and side discharge capability can be mounted in any orientation.
The eSQD comes with S&P's Electronically Commutated Motor (eMotor) which offers the energy efficiency of a DC motor with the ease of maintenance of DD motors. The eMotor has a motor mounted potentiometer, and can be controlled by a 0-10V signal.
2-year fan housing warranty, 1-year motor warranty
SQD Specifications
| Size | Max HP | CFM Range | Max SP | Avg. Ship Weight (lbs) |
| 6 | 1/10 HP | 93 to 424 | 1" | 30 |
| 8 | 1/25 HP | 149 to 503 | 1/4" | 60 |
| 10 | 1/4 HP | 305 to 1076 | 1/2" | 75 |
| 12 | 1/4 HP | 529 to 1686 | 1/2" | 90 |
| 15 | 1/2 HP | 793 to 2879 | 3/4" | 120 |
eSQD Specifications
| Size | Max HP | CFM Range | Max SP | Avg. Ship Weight (lbs) |
| 6 | 83 to 269 | 5/8" | ||
| 8 | 1/4 HP | 202 to 820 | 3/4" | 60 |
| 10 | 1/2 HP | 292 to 1578 | 1" | 75 |
| 12 | 3/4 HP | 500 to 2344 | 1" | 90 |
| 15 | 1,178 to 3,720 | 3/4" |
SQD
| Size | A | B | C |
| 6 | 13" | 14" | 8-7/8" |
| 8 | 16" | 17" | 11-7/8" |
| 10 | 19" | 20" | 13-7/8" |
| 12 | 23" | 24" | 15-7/8" |
| 15 | 28" | 29" | 19-7/8" |
eSQD
| Size | A | B | C |
| 6 | 13" | 14" | 8-7/8" |
| 8 | 16" | 17" | 11-7/8" |
| 10 | 19" | 20" | 13-7/8" |
| 12 | 23" | 24" | 15-7/8" |
| 15 | 28" | 29" | 19-7/8" |
Note: Additional accessories are available for certain products. Contact your S&P Representative for more information about these accessories.
Standard Accessories
| Mounted and Wired Disconnect | |
| Filter Box | |
| Side Discharge | |
| Belt Guard | |
| Motor Cover | |
| Inlet Guard | |
| Outlet Guard | |
| Hanging Bracket/Mounting Foot with Hanging Spring Isolator | |
| Hanging Spring Isolator | |
| Hanging Rubber in Shear Isolator | |
| Assorted Disconnects | |
| Heavy-duty Disconnects | |
| Backdraft Damper | |
| Insulated Housing |
Ecowatt® Accessories
| Constant Pressure System | |
| Potentiometer | |
| EC Differential Pressure Control | IOM |
| ECM Speed Control | |
| ECM Multi-Speed Control | Manual |
- General / Clean Air
- Spark Resistant
- Offices / Common Areas