8tech's ducts and the coiled steel fittings are available in all commercial diameters and are equipped with sealing gaskets which ensure a reduction of losses.

8tech's channels used for controlled mechanical ventilation systems are of various types and of different diameters according to the air flow and the design needs. Both pipes and spiro steel fittings and hoses are used. Particular attention is paid to the materials used to ensure thermal and acoustic insulation with antibacterial and anti-mite coatings.