The Hi-Flow ThruVent Tile is a means of incorporating higher levels of ventilation within the roof slope than the standard ThruVent Tile at high or low level. It can be also be used for soil pipe ventilation with no restrictions in usage.
Authority
The components of the Hi-Flow ThruVent Tile comply with BS EN 490: 1994, BS 5250: 2002, BS 5534: 2003 and BS 5572: 2000.