Brochure
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Compact Size-TD Fans require minimum space
The S&P TD-MIXVENT & TD-SILENT series of in-line duct fans have been specially designed to 
maximize the airow performance with minimal noise levels within the smallest and most compact of 
housing sizes. This makes the TD-MIXVENT & TD-SILENT series the ultimate solution for small to 
medium sized ventilation installations which require a high airow to pressure ratio and occupy only 
the minimum space possible. Example: false ceiling voids, cabinets and many other limited space 
environments. 
Easy to Install...t and forget!
All the models in the TD-MIXVENT & TD-SILENT range 
have  been  designed  with  the  professional  contractor/
engineer in mind. All models include a “removable body” 
feature that enables the motor-impeller assembly to be 
completely  removed  or  replaced  without  the  need  to 
interfere with the attached ducting.
Multitude of features-high specication
All models within the TD-MIXVENT & TD-SILENT range incorporate a powerful mixed ow impeller 
and internal air vanes located at the discharge end of the fan housing. This impeller and guide vane 
combination provides a smooth laminar air ow which in turn minimizes turbulence and noise, and 
generates an excellent air ow to pressure performance ratio.
Description
All of the TD-fans include the combination of a powerful motor, factory installed, to a mixed ow im-
peller. This motor and impeller combination enables the TD-fans to deliver high airow performances 
with  minimum  noise  generation  against  high  static  pressures  typically  found  in  ducted  ventilation 
systems. The unique design of the support brackets, allows the motor and impeller assembly to be 
tted or removed without dismantling the adjacent ducting and therefore, facilitating any installation 
or maintenance. The internal aerodynamic design of the TD-MIXVENT & TD-SILENT fans enable the 
units to generate large air volumes and pressures with the minimum of in-duct or radiated noise. The 
TD-fans offer the ideal in-line duct fan solution for a wide range of HVAC ventilation applications.
Overview TD-MIXVENT & TD-SILENT Series ....................................................................2
TD-MIXVENT & TD-SILENT Practical Installations ............................................................3
TD-MIXVENT General Details ............................................................................................4
TD-MIXVENT Installation & Maintenance ..........................................................................5
TD-MIXVENT Technical Specications ..............................................................................6-7
TD-MIXVENT KIT-Bathroom Kits .......................................................................................8
TD-SILENT General Details ...............................................................................................9
TD-SILENT Innovative Features ........................................................................................10
TD-SILENT Easy Installation ..............................................................................................11
TD-SILENT Technical Specications ..................................................................................12-13
TD-MIXVENT & TD-SILENT Accessories...........................................................................14-18
Mixed Flow vs. Axial & Centrifugal Fans ............................................................................19
PV-Powervent & SWF Sidewall  .........................................................................................20
Table of Contents
Overview TD-MIXVENT & TD-SILENT Series
Internal parts can be easily removed for 
mounting & servicing










