SDBD and SDBDe Downblast Direct Drive Centrifugal Roof Exhaust Fans

Centrifugal Roof & Wall Fan Series

Centrifugal Roof & Wall Fans
SDBD and SDBDe SDB STXD, STXDe, and STXDeRHUL STXB, STXB-RHUL, and STXB-HP STXB-HT2 and STXB-HT LPD and LPD-SF CWD
SDBD and SDBDe Models

High Wind Tie-Down Kit Option Available

Model Features

  • Exhaust air up to 4,984 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
  • AMCA Air and Sound Licensed
  • cULus 705 Listed
  • Ecowatt® (SDBDe 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
  • This product meets the requirements of Buy American (2009) and Build America, Buy America (BABA), as part of IIJA (2022). Download letter here.

AMCA Air and Sound LicensedcULus ListedEcowatt Registered Miami-Dade NOA BABA-ACT

Model Overview

SDBD and SDBDe direct drive fans are designed to exhaust air up to 4,984 CFM, with high static pressure capability up to 2-1/4". The non-overloading backward inclined wheel with its higher static pressure capability makes these units suitable for either ducted or non-ducted applications. The spun aluminum exterior provides an attractive appearance and is compatible with belt driven Model SDB and companion gravity units to make up a complete ventilation system. Direct drive units use smaller diameter wheels, 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. Its roof mounting permits short duct runs and more efficient operation.

SDBD and SDBDe are generally used to exhaust air from all types of commercial and institutional buildings such as hospitals and healthcare facilities, schools, recreational buildings, machinery and equipment rooms, offices, retail stores and similar applications.

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

Size CFM Range Max SP
6 53 to 351 3/4"
7 79 to 476 3/4"
8 187 to 892 7/8"
10 398 to 1,348 1"
12 479 to 1,885 1-1/4"
14 858 to 3,507 1-1/2"
15 779 to 4,083 2"
16 966 to 4,733 2-1/4"
18 1,100 to 4,194 1-1/4"
Dimensional Drawing

Dimensional data is displayed in inches.

Size A B C D Roof Opening Curb O.D. Damper O.D.
06 18 14-1/8 22-5/16 1-1/2 13-1/2 16-1/2 12
07 18 16-13/16 22-5/16 4-1/8 13-1/2 16-1/2 12
08 18 20-1/2 22-5/16 4-1/8 13-1/2 16-1/2 12
10 18 20-1/2 22-5/16 5-1/8 13-1/2 16-1/2 12
12 20 27-5/16 27-5/8 3-7/8 15-1/2 18-1/2 14
14 20 27-5/16 27-5/8 3-7/8 15-1/2 18-1/2 14
15 24 28 32-7/8 4 19-1/2 22-1/2 18
16 24 28 32-7/8 4 19-1/2 22-1/2 18
18 30 36-3/8 39-3/16 4-5/8 25-3/16 28-1/2 24

SDBD and SDBDe 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.

KIT-PV100X

High Wind Tie-Down Kit

  • Tie-downs
  • Fastened motor cover
  • Reinforced birdscreen
Flyer

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

Standard Accessories

Automatic (Gravity) Damper    
Backdraft Damper Submittal  
Curb Cap Adaptor Submittal  
Curb Hinge Arrangement    
Motor Operated Damper    
Roof Curb Submittal  
Self-Flashing Curb Submittal  
Solid State Speed Controls    
Ventilation Gas Detectors Submittal IOM

Ecowatt® Accessories

Constant Pressure System    
Potentiometer Submittal  
EC Motor Speed Control    
EC Differential Pressure Control   IOM
ECM Multi-Speed Control   IOM

Miami Dade Certification
General Catalog Section
Ecowatt® Brochure
Typical Specification Sheet (SDBD)
Typical Specification Sheet (SDBDe)
Submittal
Instruction and Operation Manual (SDBD)
Instruction and Operation Manual (SDBDe)

SDBD & SDBDe

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