Protan Ventiflex Duo

Protan Ventiflex Duo is a concept that has been developed to transport air through narrow passages or in tunnels with limited headroom without compromising the air flow.

For narrow passages

The idea is simply to substitute the main duct, with two smaller diameter ducts, through a transition piece, not compromising on air volume and other capabilities of the designed ventilation system.

Less energy consumption

Protan Ventiflex Duo has a larger cross-section than other similar systems, which means lower energy consumption for the same installation height and fan output. It also delivers more air to the face with the same fan output.

Two independent ducts

The two standard ducts are independent, and are utilizing all the standard coupling systems. The advantage is obvious, the duo-duct has no conceptual limitations for the total duct-length installation.

In order to ensure efficient delivery of our best-selling ventilation systems, the products we offer are divided into three categories.

Ventiflex items in stock

Delivery time* for our in stock ventilation systems is 2 days.

Duct qualities Diameter Length pr section (meter) Coupling Hooks Application
V6298  1000 mm  10 VF coupling  Snap hooks Mining
V6298  1000 mm 10 LP coupling  Snap hooks Mining
V6298  1200 mm 10 Zip coupling  Snap hooks Mining
V6298  1200 mm 10 LP coupling  Diamond hooks Mining

Ventiflex standard

Delivery time* for our standard ventilation systems is maximum 10 days.

Duct qualities  Diameter Length pr section (meter) Coupling Hooks Application
V6298 800 mm 5, 10, 20, 25, 50, 100, 200 Optional     Snap hooks      Mining
V6298 1000 mm 5, 10, 20, 25, 50, 100, 200 Optional   Snap hooks Mining
V6298 1200 mm 5, 10, 20, 25, 50, 100, 200 Optional Snap hooks Mining
V6698  1400 mm 5, 10, 20, 25, 50, 100 Optional Snap hooks Tunnel 
V6698  1600 mm 5, 10, 20, 25, 50, 100 Optional Snap hooks Tunnel 
V6698  1800 mm 5, 10, 20, 25, 50, 100 Optional Snap hooks Tunnel 
V6698  2000 mm 5, 10, 20, 25, 50, 100 Optional Snap hooks Tunnel 

Ventiflex customised

We are able to deliver our ventilation ducts in many dimensions and length. We deliver also different qualities, couplings and hooks.

Please contact us for solutions and delivery time.

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Regardless of category, we will always strive for shortest possible delivery time for all our customers.

Download Terms of sale and delivery here.

* Delivery time is defined as the time from receipt of written order until ready Ex Works (EXW) factory at Nesbyen, Norway.


Get details on Specifications for Ventiflex ventilation ducts here.

Download Calculated Burst Pressure for Ventiflex here.

Protan Ventiflex Coupling

Protan Ventiflex couplings offer great flexibility