UBB and UBX Upblast Propeller Roof Exhaust Fans

Roof Propeller Fan Series

UBB and UBX Models

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

cULus

Model Overview

UBB and UBX are high capacity roof mounted exhausters rated from 5,900 to 78,000 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, distribution centers, 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

UBB Specifications

Size CFM Range Max SP
24 4,800 to 10,000 1/2"
30 3,254 to 13,411 1/2"
36 11,062 to 19,349 1/2"
42 16,000 to 29,700 1/2"
48 17,600 to 44,800 1/2"
54 24,200 to 51,800 1/2"
60 27,800 to 61,000 1/2"
72 40,500 to 70,800 3/8"

UBX Specifications

Size CFM Range Max SP
24 5,200 to 11,200 1/2"
30 7,900 to 18,600 1/2"
36 1,200 to 27,400 1/2"
42 13,300 to 32,800 1/2"
48 18,600 to 45,800 1/2"
54 19,400 to 55,600 1/2"
60 35,100 to 57,200 1/2"
72 44,000 to 65,500 3/8"
Dimensional Drawing for the UBB and UBX Models

Dimensional data is displayed in inches.

Size A B C D E
24 30 33 16 32 24
30 36 36 17 38 30
36 42 38 17 44 36
42 48 41 18 50 42
48 54 44 22 56 48
54 60 47 22 62 54
60 66 50 22 68 60
72 80 56 31 82 72

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  
Heat/Smoke Vent  
Extended Grease Lines  

General Catalog Section
Submittal (UBB)
Submittal (UBX)
Instruction and Operation Manual

  • General/Clean Air
  • Contaminated Air