Product Name: Marine Steel Mushroom Ventilators (type A) Model NO.: A Certification: CCS Performance: Low Noise Shape: Round Usage: Vent-Pipe Material: metal Certificate: CCS Type: Inland and Coastal Boats Marine Parts: Marine Hardware Trademark: HS Transport Package: Wooden Case Specification: ISO Origin: Jiangsu HS Code: 8908000000 Product Description In accordance with CB/T295-2000 standards, the mushroom ventilators is used on exposed natural ventilation for all types of ships. With the advantages of easy to operate, widely used and nicer weather tight, the mushroom ventilators has been widely used in all kinds of domestic and foreign ships.ModelNominal D iaDD1D2D3HH1H2hWeight kgA10020015613610018050132423.6415030020618014023566176625.70200400256236140285902208210.5025050030628616033310026110415.5030060035633616037512030012222.1035070040628620041513033614228.2040078045643620044513036016237.9045088051049222548114038517747.3050098056054225054017044220259.10600116066064225060018050324277.60