ROOF TURBINE VENTILATOR
It shall be "LOMANCO" Turbine Ventilator (USA) or approved equivalent 14" diameter NECK Size consisting of :
  •   All aluminium rust-free construction.

  •   Lightweight - not more than 1.2 kg (2.5 lbs).<
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  •   Internal frame to be of rigid aluminium spider - type       construction.

  •   21 air - foil curved vanes.

  •   Permanently lubricated stainless steel ball - bearings with inner       and outer race made of DELRON R sonically welded.

  •   Certified to withstand wind velocity of 193km/h for 60 minutes.

  •   Lifetime product warranty and 20 years warranty against water       leakage.
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