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SDB Belt Drive Centrifugal Downblast Roof Exhaust Fan

Centrifugal Roof & Wall Fan Series

SDB Model

Model Features

  • Exhaust air up to 15,583 CFM in high static pressure applications up to 1-3/4" w.g.
  • Attractive spun aluminum exterior
  • Belt drives permit easy performance adjustments when needed
  • Curved non-overloading backward inclined wheel for efficiency at higher static pressures
  • AMCA Air and Sound Licensed
  • cULus 705 Listed

AMCA Air and Sound Licensed   cULus Listed

Model Overview

The SDB belt drive fans are designed to exhaust air up to 15,583 CFM in high static pressure applications up to 1-3/4". The aluminum exterior provides an attractive appearance. Belt drive results in lower operating RPM and sound levels, making the Model SDB well suited to applications where quiet operation is important. Belt drive also permits easy performance adjustments when needed to balance the total ventilation system. The non-overloading backward inclined wheel with its higher static pressure capability makes this unit suitable for either ducted or non-ducted applications. Its roof mounting permits location near the area to be ventilated, allowing short duct runs and more efficient operation.

SDBs are primarily used for the exhaust of relatively clean air from a wide range of commercial, industrial and institutional environments such as manufacturing and assembly plants, office buildings, schools, hospitals, restaurants, athletic facilities and many others.

Industry best 5-year fan housing warranty, 1-year motor warranty

Size CFM Range Max SP
6 41 to 375 7/8"
7 44 to 547 7/8"
8 194 to 1,132 1"
10 244 to 1,422 1"
12 425 to 1,870 1-1/4"
14 802 to 3,525 1-1/2"
15 543 to 3,724 1-1/2"
16 1,275 to 4,135 1-1/2"
18 1,389 to 5,787 1-3/4"
20 1,728 to 6,259 1-3/4"
22 2,522 to 8,098 1"
24 3,406 to 9,466 1-1/4"
27 2,500 to 9,638 1"
30 4,238 to 15,583 1-1/2"
Dimensional Drawing

Dimensional data is displayed in inches.

Size A B C D Roof Opening Curb (O.D.) Damper (O.D.)
6 18 30-1/8 25 3-3/8 13-1/2 16-1/2 12
7 18 30-1/8 25 3-3/8 13-1/2 16-1/2 12
8 18 30-1/8 25 3-3/8 13-1/2 16-1/2 12
10 18 30-1/8 25 3-3/8 13-1/2 16-1/2 12
12 20 31-11/16 27-5/8 3-7/8 15-1/2 18-1/2 14
14 20 31-11/16 27-5/8 3-7/8 15-1/2 18-1/2 14
15 24 32-1/2 32-7/8 4 19-1/2 22-1/2 18
16 24 32-1/2 32-7/8 4 19-1/2 22-1/2 18
18 30 36-3/8 39-3/16 4-5/8 25-1/2 28-1/2 24
20 30 38-5/16 45 6-1/8 25-1/2 28-1/2 24
22 30 38-5/16 45 6-1/8 25-1/2 28-1/2 24
24 36 46-5/8 49-3/8 6 31-1/2 34-1/2 30
27 36 49-1/16 49-3/8 8-1/2 31-1/2 34-1/2 30
30 42 50-1/4 56 7-3/8 37-1/2 40-1/2 36

Note: Additional accessories are available for certain products. Contact your S&P Representative for more information about these accessories.

Standard Accessories

Description  
Automatic Belt Tensioner   Download
Automatic (Gravity) Damper   Download
Motor Operated Damper   Download
Curb Hinge Arrangement   Download
Roof Curb   Download

Description  
Centrifugal Spun Alumimum Products Brochure   Download
SDB Catalog Pages   Download
SDB Product Submittal   Download
SDB Product IOM   Download

Description  
SDB Revit File  

  • General/Clean Air
  • Spark Resistant
  • Bathrooms
  • Garages
  • General (non-grease) Kitchen Areas
  • Offices
  • Dormitories
  • Manufacturing and Assembly Plants
  • Warehouses
  • Places of Worship
  • Schools
  • etc.