Golden Engineering Co. Pvt. Ltd. Manufactures Light Weight Energy Saver Ventilator. Golden Engineering Co. Pvt. Ltd. Is the supplier of engineering components and powerless turbine ventilators. Light Weight Energy Saver Ventilator is available in aluminum and stainless steel material. Light Weight Energy Saver Ventilator can be easy and quick installation on any roof profile. This ventilator is light weight, strong and durable construction for resistance against extreme climatic conditions. These are available in the range from 12 to 36 inches.