STXD, STXDe, and STXDeRHUL Upblast Direct Drive Centrifugal Roof/Sidewall Exhaust
Spun Aluminum Centrifugal Fan Series
Model Features
- Exhaust air up to 4,780 CFM in high static pressure applications up to 2-1/4" w.g.
- Attractive spun aluminum exterior
- Direct drive units have low sound levels and quiet operation
- Curved non-overloading backward inclined wheel for efficiency at higher static pressures
- Roof or sidewall mounting options
- AMCA Air and Sound Licensed
- cULus 705 or 762 Listed
- Ecowatt® (STXDe and STXDeRHUL Models)
- Miami-Dade NOA and Florida Product Approval Option Available Download letter here.
- Listed with the Texas Department of Insurance under Product Evaluation RV-126 for wind load and windborne debris resistance per IRC/IBC 2018
Model Overview
TModel STXD direct drive fans are designed to exhaust air up to 4,780 CFM in high static pressure applications to 2-1/4". The aluminum exterior provides an attractive appearance. The non-overloading backward inclined wheel with its higher static pressure capability makes this unit suitable for either ducted or nonducted applications. Its roof or wall mounting permits location near the area to be ventilated, allowing short duct runs and more efficient operation. Direct drive units use smaller diameter wheels with lower rpm's, resulting in low sound levels and quiet operation. They have no belts or fan bearings to maintain or adjust and consequently require very little maintenance.
Isolation of the motor from the air stream and the high velocity vertical (roof) or horizontal (wall) air discharge make the Model STXD ideally suited for the removal of dirty, contaminated and/or high temperature air from processes and buildings. Typical applications include restaurant hoods and similar kitchen exhaust ventilation, fume and smoke removal, laboratory fume hood exhaust and chemical process exhaust.
5-year fan housing warranty, 1-year motor warranty
STXD-RHUL units have 2-year fan housing warranty
STXD Specifications
| Size | Max HP | CFM Range | Max SP | Avg. Ship Weight (lbs) |
| 6 | 1/10 HP | 56 to 308 | 3/4" | 89 |
| 7 | 1/10 HP | 78 to 437 | 3/4" | 89 |
| 8 | 1/4 HP | 182 to 935 | 7/8" | 98 |
| 10 | 1/3 HP | 322 to 1,445 | 1" | 101 |
| 12 | 1/2 HP | 470 to 1,918 | 1-1/4" | 111 |
| 14 | 1 HP | 868 to 3,268 | 1-1/2" | 118 |
| 15 | 1-1/2 HP | 800 to 3,997 | 2" | 140 |
| 16 | 1-1/2 HP | 880 to 4,781 | 2-1/4" | 141 |
| 18 | 1,098 to 4,272 | 1-1/4" |
Dimensional data is displayed in inches.
| Size | A | B | C | D | Roof Opening | Curb O.D. | Damper O.D. |
| 6 | 18 | 25-5/16 | 28-5/8 | 23-5/16 | 13-1/2 | 16-1/2 | 12 |
| 7 | 18 | 25-5/16 | 28-5/8 | 23-5/16 | 13-1/2 | 16-1/2 | 12 |
| 8 | 18 | 25-5/16 | 28-5/8 | 23-5/16 | 13-1/2 | 16-1/2 | 12 |
| 10 | 18 | 25-5/16 | 28-5/8 | 23-5/16 | 13-1/2 | 16-1/2 | 12 |
| 12 | 20 | 26-15/16 | 31-5/16 | 24-15/16 | 15-1/2 | 18-1/2 | 14 |
| 14 | 20 | 26-15/16 | 31-5/16 | 24-15/16 | 15-1/2 | 18-1/2 | 14 |
| 15 | 24 | 27-5/8 | 36-1/2 | 25-5/8 | 19-1/2 | 22-1/2 | 18 |
| 16 | 24 | 27-5/8 | 36-1/2 | 25-5/8 | 19-1/2 | 22-1/2 | 18 |
| 18 | 30 | 35-3/4 | 42-5/8 | 30-1/2 | 25-3/16 | 28-1/2 | 24 |
STXD, STXDe, STXDRHUL and STXDeRHUL Kits
Select S-Series (Centrifugal Roof Fans) models are now hurricane and high wind certified for wind-borne debris impact resistance and wind load design pressures up to ±150 PSF.
High Wind Tie-Down Kit
Non-flanged horizontal mount exhaust backdraft damper
- Tie-downs
- Fastened motor cover
Note: Additional accessories are available for certain products. Contact your S&P Representative for more information about these accessories.
Standard Accessories
| Aluminum Grease Trough | ||
| Automatic (Gravity) Damper | ||
| Backdraft Damper | ||
| Clip Lock Curb (Available for Non-Restaurant Models) | Submittal | |
| Curb Cap Adaptor | Submittal | |
| Curb Hinge Arrangement | ||
| Grease Grabber | ||
| Insect Screen | ||
| Motor Operated Damper | ||
| Roof Curb | Submittal | |
| Self-Flashing Curb | Submittal | |
| Solid State Speed Control | ||
| Ventilation Gas Detectors | Submittal | IOM |
| Wall Mounting Kit | Submittal | |
| Wheel Cleaning Port |
Ecowatt® Accessories
| Constant Pressure System | ||
| Potentiometer | Submittal | |
| EC Differential Pressure Control | IOM | |
| EC Motor Speed Control | ||
| ECM Multi-Speed Control | IOM |
- Restaurant Hoods / Kitchen Ventilation
- Fume and Smoke Removal
- Laboratory Fume Hoods
- Chemical Process Exhaust