ventilation equipment including quick-dome tank with 4.6 m and 1.5 m ducts For the ventilation of shafts and vertically confined spaces in dangerous environments • The design allows easy entry and exit, and requires only 7.5 cm of the shaft. • 90-degree angle allows unrestricted air flow of fans through the vertical opening down • The 4.6 m long ducts can be mounted above or below ground and meet specific ventilation requirements • Provides maximum safety and productivity • Ventilation channel adapter • 90 ° bend for manholes and manhole adapter for universal support • Power cable 10 m • power 220V earthed plug / 50 Hz, 1.2 A current operation, 74dB, 245W • Weight 30 kg • Capacity 1392 m³ / hr