Description • Flexible air duct from aluminium foil laminated with polyether. • Spiral frame from high-carbon steel wire. Features • Pollution-free, no harmful substances emission during operation. • No chlorine and cadmium content. • high elasticity and temperature resistance: short-time resistance up to +250°C for M0, shorttome resistance up to +150°C for M1. Recommended application • Applied in residential and industrial ventilation, air conditioning and heating systems, peripheral sections of large central utility systems with the maximum pressure 3000 Pa and special fire-resistance requirements to air ducts. • Recommended for ventilation of child care centres, educational and medial facilities, spa resorts.