SQD and eSQD Direct Drive Square Inline Centrifugal Duct Fans
In-line/Sidewall 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® (SQDe Models ONLY)
- This product meets the requirements of Buy American (2009) and Build America, Buy America (BABA), as part of IIJA (2022). Download letter here.
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 with electronically commutated (EC) motors are 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 our Electronically Commutated Motor which offers the energy efficiency of a DC motor with the ease of maintenance of DD motors. The eSQD motors have mounted potentiometer and can be controlled by a 0-10V signal.
2 year fan housing warranty, 1 year motor warranty
SQD Specifications
| Size | CFM Range | Max SP |
| 6 | 93 to 424 | 1" |
| 8 | 149 to 503 | 1/4" |
| 10 | 305 to 1076 | 1/2" |
| 12 | 529 to 1686 | 1/2" |
| 15 | 793 to 2879 | 3/4" |
eSQD Specifications
| Size | CFM Range | Max SP |
| 6 | 83 to 269 | 5/8" |
| 8 | 202 to 820 | 3/4" |
| 10 | 292 to 1578 | 1" |
| 12 | 500 to 2344 | 1" |
| 15 | 1,178 to 3,720 | 3/4" |
SQD
Dimensional data is displayed in inches.
| Size | A | B | C | D | E | F | G |
| 6 | 13 | 14 | 8-7/8 | 17-3/4 | 10 | 11 | 16-1/2 |
| 8 | 16 | 17 | 11-7/8 | 20-3/4 | 13 | 14 | 19-1/2 |
| 10 | 19 | 20 | 13-7/8 | 23-3/4 | 16 | 17 | 22-1/2 |
| 12 | 23 | 24 | 15-7/8 | 27-3/4 | 20 | 21 | 26-1/2 |
| 15 | 28 | 29 | 19-7/8 | 32-3/4 | 25 | 26 | 31-1/2 |
eSQD
Dimensional data is displayed in inches.
| Size | A | B | C | D | E | F | G |
| 6 | 13 | 14 | 8-7/8 | 17-3/4 | 10 | 11 | 16-1/2 |
| 8 | 16 | 17 | 11-7/8 | 20-3/4 | 13 | 14 | 19-1/2 |
| 10 | 19 | 20 | 13-7/8 | 23-3/4 | 16 | 17 | 22-1/2 |
| 12 | 23 | 24 | 15-7/8 | 27-3/4 | 20 | 21 | 26-1/2 |
| 15 | 28 | 29 | 19-7/8 | 32-3/4 | 25 | 26 | 31-1/2 |
Standard Accessories
| Mounted and Wired Disconnect | |
| 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 Disconnect | |
| Backdraft Damper | Submittal |
| Insulated Housing |
Ecowatt® Accessories
| Constant Pressure System | |
| Potentiometer | Submittal |
| ECM Speed Control | |
| ECM Multi-Speed Control | IOM |
- General/Clean Air
- Spark Resistant
- Offices/Common Areas