Gebhardt –Stahl slip-on duct connections enable the fast, cost-effective and tight connection of rectangular air ducts. Almost any size and sealing class is possible. Comprising of slip-on duct flanges of different sizes and a variety of different corners, our 4-bolt connection systems allow for the appropriate connecting frame to be produced for every requirement (duct size, volume flow, pressure ratios, air tightness). Flanges and corners are also available made of stainless steel (AISI 304 or AISI 316) or aluminium.

Of course, our air duct profiles are also available with injected sealing compound. The sealing compounds Gebhardt-Butyl and Gebhardt-GEL meet the hygiene requirements for use in HVAC systems in accordance with VDI 6022. These flanges are suitable for sealing class C or D (Premium-Flange) without additional sealing measures along the longitudinal edge of the flange

Continuous development and optimisation of flanges and corners give you the secure feeling that you will always use state-of-the-art products. Highest quality, efficient and easy to process.