The SHAFT TUBING is standard tubing with 2" load rated webbing that is radio frequency welded to opposite sides of the tubing and with 2" ratchets connected to the webbing of the next section. The Ring or Snap-roc couplings are then connected to extend the tubing.
- Tubing dimensions vary from 300m to 3000mm (12 inches to 120 inches)
- Standard lengths: 15m, 7.5m (50ft, 25ft)
- Custom lengths available
- The ventilation duct/tubing is certified by Natural Resources Canada under Certification # 1181. The ducting/tubing also conforms to CAN/CSA-M427-M91.
Atkinson Equation for Vent Duct Losses @ 0.075. Use the Excel spreadsheet to make your calculations.