Duct Stiffener

The ‘S’ Type Stiffener is fitted to the outside of ductwork between the cross joints to strengthen the ductwork and reduce vibration.  Unlike rolled steel angle, the stiffener provides a simple and economical method of stiffening ductwork, without the need for secondary protection. Fixing centres are rolled into the stiffener during manufacture; this ensures an easier and quicker fitting time by drilling stiffener and ductwork for fasteners in a single operation. Our ‘S’ Type Stiffener is also more convenient as it can be fitted after the ductwork jointing system has been fitted. The ‘S’ Type Stiffener is manufactured to comply with fig. 19 of the HVCA Specification DW/144.

Our ‘S’ Type Stiffener profile is available in 3 sizes and is supplied in 5m lengths.

Our new 'S3' Stiffener and Stiffener corners are available now!  The S3 Stiffener profile completes our profile range and with the addition of our zinc plated, purpose designed corner pieces, we are now able to offer a full range of products to suit all of your stiffening requirements. 

 From February 2009 our Stiffener Profiles will come complete with pre-punched fixing holes for ease of attachment to the duct.

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