TDD Direct Drive Tubeaxial In-line Duct Fan

Tubeaxial Fan Series

TDD Models

Model Features

  • Rated up to 39,194 CFM in static pressure applications up to 1-1/4" w.g.
  • Direct drive units have low sound levels and quiet operation
  • Smaller sizes for areas with reduced airflow needs
  • Require practically no maintenance
  • cULus 705 Listed
  • AMCA Air Licensed

AMCA Air Licensed   cULus 705 Listed

Model Overview

The Tubeaxial line offers the widest range of sizes, horsepower, and performance in the industry. TDD's are high capacity tubeaxial fans rated from 643 to 39,194 CFM, with static pressure capability up to 1-1/4". They are used to exhaust air from or supply air to commercial and industrial applications, such as general building ventilation, enclosed garages, and other applications where the air is moved through a duct system against moderate static pressure.

TDD's are best used for exhausting or supplying relatively clean ambient temperature air. They require practically no maintenance and are available in smaller sizes for areas with reduced airflow needs.

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

Size CFM Range Max SP
12 816 to 1,507 1/8"
16 1,889 to 3,240 1/2"
18 2,525 to 5,226 5/8"
20 643 to 4,777 3/4"
24 2,640 to 9,585 1"
30 1,559 to 15,387 1-1/4"
34 4,043 to 26,099 1-1/4"
36 2,562 to 26,845 1-1/4"
42 3,561 to 32,213 1-1/4"
48 8,730 to 39,194 1"
Dimensional Drawing TDB
Size A B C1 B.C.D.
12 12-3/8" 15" 12" 13-1/2"
16 16-3/8" 18-7/8" 16-1/2" 17-3/8"
18 18-3/8" 22-1/2" 22" 19-3/4"
20 20-3/8" 24-1/2" 22" 21-3/4"
24 24-3/8" 28-5/8" 23" 25-3/4"
30 30-3/8" 34-5/8" 24" 32"
34 34-3/8" 38-5/8" 27" 36-3/8"
36 36-3/8" 40-58" 29" 38"
42 42-1/2" 46-3/4" 30" 44-1/4"
48 48-1/2" 52-3/4" 33" 50-3/4"

1. The motor may extend past unit size.

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

Standard Accessories

Description  
Motor Cover   Download
Belt Guard   Download
Hanging and Floor Brackets   Download
Companion Flange (Inlet/Outlet)   Download
Inlet Guard   Download
Outlet Guard   Download
Mounting Rails   Download
Rubber Isolator (Floor)   Download
Rubber Isolator (Hanging)   Download
Spring Isolator (Floor)   Download
Spring Isolator (Hanging)   Download
Inspection Door   Download
Disconnect Switches   Download
Shaft Seal   Download

Description  
General Catalog Section   Download
Submittal   Download
IOM   Download
Mounting Diagram   Download

  • General/Clean Air
  • Contaminated Air
  • Spark Resistant