Description:1.This fan grill is used on 120mm x 120mm fans for boiler fans, exhaust fans, and other low pressure fans.2.Metal construction, four holes fixing , durable used. Specification:Product Name: Fan GrillFit for: 120mm x 120mmTotal Size: 157 x 157mm / 6.18 x 6.18 inch (L*W)Mounting Hole Size: 105 x 105mm / 4.13 x 4.13 inch (L*W)Material: Nickel SteelColor: Silver TonePackage Content: 5pcs x Fan Grill The product has the functions of reducing the outgoing noise of the fan, prolonging the service life of the fan, and preventing wires or anything else from not entering the fan.