Open Menu Tel Ductwork stiffeners Gebhardt Ductwork Stiffeners are fitted to the outside of ductwork to reinforce the ductwork and to reduce vibrations.The stiffeners enable you to reinforce ductwork in a simple and cost-effective way. Pre-drilled holes ensure a convenient fixing.The stiffeners are also suitable to reinforce already fitted ductwork, as the stiffeners can be fitted to the completed ducts. conforms to DW 144 Specification Figure 26 available with S3 rating (Stiffener S3 40x30mm) and S4 rating (Stiffener S4 50x40mm) no need for retrospective painting of black angle iron pre-drilled holes down each length Stiffener S3 Art. No. 313 300 010 Galvanized steel Z275 Pre-drilled holes for fixing 40mm x 30mm x 1.75mm Length 5m, PU 250m Enquiry Stiffener S4 Art. No. 313 310 010 Galvanized steel Z275 Pre-drilled holes for fixing 50mm x 40mm x 2.00mm Length 5m, PU 250m Enquiry Stiffener Corners Corners for Gebhardt Ductwork Stiffeners. Stiffener corner GS3 Art. No. 313400010 Galvanized steel Z275 Suitable for Stiffener S3 PU 100 pcs Enquiry Stiffener corner GS4 Art. No. 313410010 Galvanized steel Z275 Suitable for Stiffener S4 PU 100 pcs Enquiry YOUR CONTACTS Your team “HVAC COMPONENTS” For all queries please don´t hesitate to contact us. We look forward to hearing from you.Get in touch with us REQUEST A CATALOG Please Choose Mr. Mrs. PRODUCTS Reinforcement sections HVAC components Vineyard stakes Bespoke profiles GEBHARDT-STAHL GMBH We have been manufacturing cold-rolled metal sections in Werl for more than 30 years. We’re an innovative medium-sized enterprise and focus on the production of steel reinforcement sections for PVCu windows, HVAC components, steel vineyard stakes and bespoke profiles. Gebhardt-Stahl GmbH Runtestraße 33 59457 Werl+49 (0) 29 22 / 97 33 - 0 info@gebhardt-stahl.de © 2021 Gebhardt-Stahl GmbH Sitemap Imprint Data Protection Statement Terms and conditions Purchasing terms