TDD Direct Drive Tubeaxial In-line Duct Fan

Tubeaxial Fan Series

TDD Models

Model Features

  • Rated up to 39,000 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
  • AMCA Air Licensed

AMCA Air and Sound Licensed

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 800 to 39,000 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, paint spray booths, heat and smoke ventilation systems 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
12 855 to 1545 1/8"
16 1965 tp 3341 1/2"
18 2667 to 5326 5/8"
20 726 to 4877 3/4"
24 2777 to 9982 1"
30 2619 to 15937 1-1/4"
34 4513 to 27099 1-1/4"
36 3162 to 27645 1-1/4"
42 5282 to 33813 1-1/4"
48 9330 to 40194 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.

Mount Options: Floor Mount, Hanging Mount, Vertical Rail Floor Mount, and Vertical Rail Hanging Mount.

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  
TDD Catalog Pages   Download
TDD Product Submittal   Download
TDD Product IOM   Download
TDD Mounting Arrangements & Access Door Options   Download

  • General/Clean Air
  • Contaminated Air
  • Spark Resistant