Angel Industries

Rooftop Air Ventilator

Rooftop Air Ventilator

We offer technically advanced Rooftop Air Ventilator that is based on latest principle of operation. Centrifugal force created by rotating vanes of turbo vent creates low-pressure zone, which draws fresh air from outside which helps in replacing polluted air/ hot air continuously to atmosphere.

Our Rooftop Air Ventilator serves the ventilation needs of many sectors. Each of our products bears a mark of quality and is superior in performance owing to implementation of latest technology. Our air ventilators are not only environment friendly but also contribute to the overall productivity of the workers. Today, we have carved a niche as one of the key Industrial Roof Top Air Ventilator  Manufacturers and Suppliers based in India.


The different features of these ventilators are

  • Sturdy in construction
  • Light in weight
  • Cost effective
  • No maintenance cost
  • Suited for buildings with explosive environment
  • Can be easily mounted on any roofing
  • Assured ventilation
  • Wind powered roof mounted ventilators that are designed to withstand high wind speeds
  • Made up of closely spaced profiled vanes, these are rain water & bird proof
  • Capable of removing heat, dust and fumes
  • helps in avoiding condensation at the bottom of the roof

The different applications of our range of turbo air ventilators include

  • Factories
  • Warehouses
  • Workshops
  • Industrial Sheds
  • Domestic application


  • Size : 28" NetDia & 21" throat Dia
  • Weight : 6.5 Kg approx
  • Technology : Teflone Bushing (noiseless)
  • Blades : 36 Nos. 0.5mm Aluminum Blades
  • Frame : MS galvanized
  • Top Cover : Stainless Steel

Note : Available in Aluminum, Stainless Steel, Powder Coating / Anodizing will be on request.

Salient Features

  • Ventilator's vane are manufactured from high grade aluminium including the rivets and therefore highly resistant to atmoshperic corrosion.
  • No power involved for its operation as its movement is controled by natura wind movement / hot
  • Air draft (Thermos Syphoning).
  • The vane's are profiled and rolled to provide strong blade with good aerodynamic performances.
  • Ventilators are light in weight and hence operational at very lightly wind speeds.
  • Since no power involved for its operations, no recurring charges in terms of electricity.
  • The vane design and the centrifugal action prevent rain water from entering the ventilator.
  • Designed to be fitted easily on asbestos, galvanized, iron and aluminium roofs. Assured ventilation for 24 hours / 65 days.

How To Calculate A Requirement of Air Ventilator

  • No. of Ventilator Required = Ventilation Rate Q / Exhaust Capacity
  • Required Ventilation rate ( cfm) = Volume (ft) * Air Change Rate / 60
  • Volume of Space to be ventilated (ft) = 1*w*h
  • Select Air Change Rate from. Table A.
  • Select Exhaust Capacity from Table B as per required Temp.
  • Diff. C and wind- Velocity (MPH).



Type of Building

Air Change rate Per Hour

Type of Building

Air Change Rate Per Hour

Were House


Engine room / Laundry @ Plastic Factory Heavy Factory / Transformer room


Textile Mill / Auditorium




Factories ( Light) Hall


Print Shop / Boiler room


Paper MW / Brewery / Oil mill / Packaging Room




  • Roof Air Ventilator Fan

  • Roof Air Ventilator

  • Rooftop Turbine Ventilator with FRP Dome