The fans shall be of the Compact Flameproof Miniduct Series, as designed and manufactured by Fantech Pty Ltd and shall be of the model numbers shown on the schedule/drawings.
They shall be approved for gas Groups llA, llB and llC, have temperature classification T6 and enclosure protection IP66.
They shall have a galvanised steel casing with a red powder-coated finish and be fitted with glass reinforced anti-static blades.
All data shall be based on tests to ISO5801:1997, Type 'D' Installation for air flow and to BS848:Part 2, 1985 for noise.