DA COMPACT Duct Axial Fan

In-line Duct Fan Series


Model Features

  • Computer designed, efficient performance, forward curved blower.
  • Exhaust air up to 4,750 CFM with static pressure capabilities to 0.35" w.g.
  • Constructed from die cast aluminum and finished in a black polyester paint coating
  • All models include asynchronous induction capacitor run and start motors
  • Low profile design
  • Class F motor insulation

Model Overview

The COMPACT Duct Axial Fans feature an extremely compact design created by the combination of an external rotor motor matched with a direct drive wrap around an impeller hub. This very low profile design optimizes airflow performance while minimizing noise generation. DA's are designed to be installed in-line with inducted or partially ducted ventilation systems for exhaust or supply air applications.

All DA's feature cylindrical flanged casings manufactured from a high grade rolled galvanized steel plate. The motor and impeller assembly are firmly supported within the casing by a strong steel support frame. All models are supplied with a pre-wired junction box located on the outside of the fan casing for easy wiring access. This terminal box protects all wiring connections against the ingress of dust and moisture. The entire assembly is protected by a two stage primer and a tough corrosion and UV resistant polyester paint finish.

5-year fan housing and motor warranty

Size CFM Range Max SP
12 570 to 1216 3/20"
16 1760 to 2540 1/4"
18 2800 to 3620 3/10"
20 3660 to 4750 7/20"
Dimensional drawing for the CTB models and all its variations.
Size A B C D E N
12 15-3/16" 13-15/16" 6-11/16" 12-7/16" 3/8" 8
16 19-3/16" 15-3/4" 6-11/16" 15-3/4" 1/2" 8
18 21-1/8" 17-3/4" 7-1/8" 17-3/4" 1/2" 8
20 23-7/16" 22-1/16" 7-1/8" 19-11/16" 1/2" 12

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

Standard Accessories

SC Speed Control Submittal
BRIDA Round Duct Matching Flange Submittal
ACOP Round Flexible Flanged Connectors  
PIE Support Feet  
DEF-T Inlet/Outlet Wire Protection Guard  

General Catalogue Section
Typical Specification Sheet
Instruction and Operation Manual

  • Exhaust or Supply of general clean air when space is limited