Underground Ventilation Duct - 305 mm (Diameter) x 9.75M (Length) - Spiral The 305 mm in diameter spiral tunnel and mining duct has a length of 9.75M and is made out of a biaxial polyester. It is able to endure temperatures between -20°C and +80°C and positive pressure between 6000 and 8000pa. Function The spiral tunnel and mining duct allows air to travel through helix steel-coiled ducting, circulating fresh air or removing unwanted air. One end of the duct can be attached via strap to a ventilator, and the ducts can be attached to one another, inter-connecting them, using the same strapping method. Applications The spiral tunnel and mining duct may be used for a ventilation system in any extreme underground construction, especially when mines and tunnels need ventilation, and in any environment where positive or negative pressure is required. It can be used in conjunction with ventilation fans.

Underground Ventilation Duct - 305 mm (Diameter) x 4.88M (Length) - Spiral The 305 mm in diameter spiral tunnel and mining duct has a length of 4.88M and is made out of a biaxial polyester. It is able to endure temperatures between -20°C and +80°C and positive pressure between 6000 and 8000pa. Function The spiral tunnel and mining duct allows air to travel through helix steel-coiled ducting, circulating fresh air or removing unwanted air. One end of the duct can be attached via strap to a ventilator, and the ducts can be attached to one another, inter-connecting them, using the same strapping method. Applications The spiral tunnel and mining duct may be used for a ventilation system in any extreme underground construction, especially when mines and tunnels need ventilation, and in any environment where positive or negative pressure is required. It can be used in conjunction with ventilation fans.

Underground Ventilation Duct - 255 mm (Diameter) x 9.75M (Length) - Spiral The 255 mm in diameter spiral tunnel and mining duct has a length of 9.75M and is made out of a biaxial polyester. It is able to endure temperatures between -20°C and +80°C and positive pressure between 6000 and 8000pa. Function The spiral tunnel and mining duct allows air to travel through helix steel-coiled ducting, circulating fresh air or removing unwanted air. One end of the duct can be attached via strap to a ventilator, and the ducts can be attached to one another, inter-connecting them, using the same strapping method. Applications The spiral tunnel and mining duct may be used for a ventilation system in any extreme underground construction, especially when mines and tunnels need ventilation, and in any environment where positive or negative pressure is required. It can be used in conjunction with ventilation fans.

Underground Ventilation Duct - 355 mm (Diameter) x 4.88M (Length) - Spiral The 355 mm in diameter spiral tunnel and mining duct has a length of 4.88M and is made out of a biaxial polyester. It is able to endure temperatures between -20°C and +80°C and positive pressure between 6000 and 8000pa. Function The spiral tunnel and mining duct allows air to travel through helix steel-coiled ducting, circulating fresh air or removing unwanted air. One end of the duct can be attached via strap to a ventilator, and the ducts can be attached to one another, inter-connecting them, using the same strapping method. Applications The spiral tunnel and mining duct may be used for a ventilation system in any extreme underground construction, especially when mines and tunnels need ventilation, and in any environment where positive or negative pressure is required. It can be used in conjunction with ventilation fans.

Underground Ventilation Duct - 405 mm (Diameter) x 9.75M (Length) - Spiral The 405 mm in diameter spiral tunnel and mining duct has a length of 9.75M and is made out of a biaxial polyester. It is able to endure temperatures between -20°C and +80°C and positive pressure between 6000 and 8000pa. Function The spiral tunnel and mining duct allows air to travel through helix steel-coiled ducting, circulating fresh air or removing unwanted air. One end of the duct can be attached via strap to a ventilator, and the ducts can be attached to one another, inter-connecting them, using the same strapping method. Applications The spiral tunnel and mining duct may be used for a ventilation system in any extreme underground construction, especially when mines and tunnels need ventilation, and in any environment where positive or negative pressure is required. It can be used in conjunction with ventilation fans.

Underground Ventilation Duct - 610 mm (Diameter) x 4.88 M (Length) - Spiral The 610 mm in diameter spiral tunnel and mining duct has a length of 4.88 M and is made out of a biaxial polyester. It is able to endure temperatures between -20°C and +80°C and positive pressure between 6000 and 8000pa. Function The spiral tunnel and mining duct allows air to travel through helix steel-coiled ducting, circulating fresh air or removing unwanted air. One end of the duct can be attached via strap to a ventilator, and the ducts can be attached to one another, inter-connecting them, using the same strapping method. Applications The spiral tunnel and mining duct may be used for a ventilation system in any extreme underground construction, especially when mines and tunnels need ventilation, and in any environment where positive or negative pressure is required. It can be used in conjunction with ventilation fans.