Model Features
- Exhaust air up to 78,000 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
- Direct drive units have low sound levels and quiet operation
- 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 airflow 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 | 3,732 to 7,939 | 1/2" |
30 | 3,906 to 14,388 | 1/2" |
36 | 3,522 to 19,087 | 1/2" |
42 | 5,386 to 25,259 | 1/2" |
48 | 7,559 to 31,480 | 1/2" |
54 | 11,910 to 36,456 | 1/2" |
60 | 22,834 to 50,996 | 1/2" |
UBS-P Specifications
Size | CFM Range | Max SP |
24 | 5,010 to 7,420 | 1/2" |
30 | 3,010 to 14,600 | 1/2" |
36 | 2,930 to 20,600 | 1/2" |
42 | 6,270 to 30,000 | 1/2" |
48 | 10,500 to 36,500 | 1/2" |
54 | 15,400 to 41,800 | 1/2" |
60 | 25,700 to 58,500 | 1/2" |
Dimensional data is displayed in inches.
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 |
Additional accessories are available for certain products. Contact your S&P 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