Stainless steel cowl vent GB 3887 A

GB 3887-83 type A marine weathertight mushroom ventilator is fitted with rubber packing on the tope of the cover. It is designed for simply and easily open and closing by rotating the mushroom head. It can be tightened in the position by the positioning bolt at the side. It is normally for small independent room or cabin in the accommodation area Main Technical Specification: Technical Standard: GB 3887-83 Type: A, Nominal Size: 150-350mm Materials: Mild Steel, Stainless Steel, Bronze, Copper Surface treatment: sandblasting to S2.5 + one layer of epoxy shop primer, Galvanized, Polished, customized surface treatment available. Classification Certificates:CCS, NK, BV, ABS, DNV-GL, LR, KR, IRS, RS, Etc. Can be Customized