UBS and UBS-P Belt Drive Upblast Propeller Roof Exhaust Fan
Roof Propeller Fan Series
Model Features
- Exhaust air up to 51,000 CFM in static pressure applications up to 1/2" w.g.
- Straight-through airflow design results in maximum exhaust efficiency
- Belt drives permit easy performance adjustments when needed
- cULus 705 Listed
- 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
UBS (steel propeller) and UBS-P (polyamide/polypropylene propeller) are high capacity roof mounted exhausters rated from 7,000 to 51,000 CFM. They are general ventilation units designed to economically remove large volumes of air, fumes, and vapors from commercial and industrial buildings such as warehouses, manufacturing and assembly plants, chemical plants, foundries and paper mills.
Straight-through airflow design results in maximum exhaust efficiency. During operation, high air flow velocity opens butterfly dampers and prevents rain or snow from entering. Dampers close and cover the venturi opening when the unit is not in use.
The roof-mounted location eliminates interference with processes and equipment inside the building. It also permits locating the exhauster over a source of heated or contaminated air, allowing direct upward venting to the outside, unlike wall mounted exhausters which may move contaminated air through adjacent workspaces.
Belt drive units usually operate more quietly and afford easier performance adjustments, while direct drive models require less maintenance.
2-year fan housing warranty, 1-year motor warranty
UBS Specifications
| Size | CFM Range | Max SP |
| 24 | 3732 to 7939 | 1/2" |
| 30 | 3906 to 14388 | 1/2" |
| 36 | 3522 to 19087 | 1/2" |
| 42 | 5386 to 25259 | 1/2" |
| 48 | 7559 to 31480 | 1/2" |
| 54 | 11910 to 36456 | 1/2" |
| 60 | 22834 to 50996 | 1/2" |
UBS-P Specifications
| Size | CFM Range | Max SP |
| 24 | 5010 to 7420 | 1/2" |
| 30 | 3010 to 14600 | 1/2" |
| 36 | 2930 to 20600 | 1/2" |
| 42 | 6270 to 30000 | 1/2" |
| 48 | 10500 to 36500 | 1/2" |
| 54 | 15400 to 41800 | 1/2" |
| 60 | 25700 to 58500 | 1/2" |
| Size | A | B | C | D | E | F |
| 24 | 30" | 26" | 20" | 32" | 28" | 31" |
| 30 | 36" | 29" | 21" | 38" | 34" | 37" |
| 36 | 42" | 31" | 21" | 44" | 40" | 43" |
| 42 | 48" | 34" | 22" | 50" | 46" | 49" |
| 48 | 54" | 37" | 26" | 56" | 52" | 55" |
| 54 | 60" | 40" | 26" | 62" | 58" | 61" |
| 60 | 66" | 43" | 26" | 68" | 64" | 67" |
Note: Additional accessories are available for certain products. Contact your JencoFan Representative for more information about these accessories.
Standard Accessories
| Roof Curb | |
| Outlet Guard | |
| Disconnect Switches | |
| Magnetic Latches | |
| Cushion Close | |
| Safety Basket Guard |
- General/Clean Air
- Contaminated Air