The key specifications of the Wing Fan Ø 1060 MM/4 Leaf 28.2 MM Bore are — Material: Glass Fibre(PA); Balancing Grade: DIN ISO 1940 G 6.3; Impeller Type: P5ZR; Pitch angle: 30°. These specifications are based on the standard GEM Equipments design; always verify against your machine's requirement before use. GEM Equipments Pvt. Ltd., established in 1984 and ISO 9001:2015 certified, is one of India's leading manufacturers of compressed air dryers, cooling towers, industrial chillers, and compressed air treatment accessories, based in Coimbatore, Tamil Nadu.