The key specifications of the Frp Fan 1800mm Dia 42mm Bore/4Leaf are — Material: Fan Hub : HDG; Fan Leaf: FRP; Nos of Leaf: 4; Coating: Hot Dip Galvanizing. These specifications are based on the standard GEM Equipments design; always verify against your machine's requirement before use. GEM Equipments Pvt. Ltd. is an ISO 9001:2015 certified, India-based manufacturer (since 1984) of compressed air dryers, cooling towers, industrial chillers, and compressed air treatment accessories, headquartered in Coimbatore, Tamil Nadu.