Tender Text INDUSAIL SYSTEM Active acoustic sail system:   with the following functions: - Room cooling in recirculation air mode with highly inductive linear diffuser for maximum comfort according to EN 13779 and ISO 7730 - Sound absorption thanks to highly effective material for reducing the reverberation time to promote comfortable ambient acoustics Type INDUSAIL PLUS, consisting of: - Recirculation air unit made of aluminium sheets, soundproof inner lining and an acoustic panel underneath - EC radial fan with suction on both sides, a stable characteristic curve, low noise levels and low electrical power consumptions - 0 … 10 V control voltage input - Heat exchanger for high thermal capacity made of copper tubes with pressed-on aluminium fins. Connection with 3/4 male thread - G4 Filter cell—easily changeable - Connection terminal box for connecting the voltage supply and control voltage signal at the customer’s site - Detachable side panels made of aluminium sheets with RAL 9010 coating - Circumferential frame profiles made of aluminium extrusion profiles — E6/EV1 natural anodized aluminium. - with integrated highly inductive blowing element with RAL 9005 coating - White, sound-absorbing base, fibreglass cladding similar to RAL 9016 - Light reflectance > 90% - Estimated sound absorption level to EN ISO 11654 DIN EN ISO 11654 - Sound absorption class C - Assembly crossbar for fixing to the recirculation air cooling unit - INDUSAIL SYSTEM is not suitable for condensing operation - Operating weight, total: approx. 50 kg Dimensions LxWxH: 2500 x 1100 x 255 mm Type INDUSAIL PLUS (QUADRO), consisting of: - Recirculation air unit with integrated supply air connection made of aluminium sheets, soundproof inner lining and an acoustic panel underneath - EC radial fan with suction on both sides, a stable characteristic curve, low noise levels and low electrical power consumption - Integrated supply air connection DN 125 - 0 … 10 V control voltage input - Heat exchanger for high thermal capacity made of copper tubes with pressed-on aluminium fins, connection with 3/4" male thread - G4 filter cell – easily changeable - Connection terminal box for connecting the voltage supply and control voltage signal at the customer’s site - Detachable side panels made of aluminium sheets with RAL 9010 coating - Circumferential frame profiles made of aluminium extrusion profiles — E6/EV1 natural anodized aluminium. - with integrated highly inductive blowing element with RAL 9005 coating - White sound-absorbing base, fibreglass cladding similar to RAL 9016 - Light reflectance >90 % - Esitmated sound absorption level according to DIN EN ISO 11654 - Sound absorption class C - Assembly crossbar for fixing to the recirculation air cooling unit Dimensions LxWxH: 2500 x 1100 x 255 mm Type INDUSAIL SILENT consisting of: - Acoustic panel with circumferential frame profile in the same design as INDUSAIL PLUS made of aluminium extrusion profiles – E6/EV1 natural anodized aluminium - with integrated highly inductive blowing element with RAL 9005 coating - White, sound-absorbing base, fibreglass cladding similar to RAL 9016 - Light reflectance >90 % - Estimated sound absorption level according to DIN EN ISO 11654 - Sound absorption class A - Assembly crossbar for fixing - Weight, total: approx. 13 kg Dimensions LxWxH: 2500 x 1100 x 50 mm