SnapRoc Tubing SnapRoc Tubing Installation Belt and ratchet used for connection to fans steel duct SnapRoc system may be used for standard tubing Spiral and DuoDuct oval Advantages Hook and D Ring provide fast and simple installation Higher air flow ef ficiency no air leakage Installed of f messenger cable for faster and more ef ficient installation ROCVENT INC MINE TUNNEL VENTILATION 29 wwwrocventcom