Mounting Hole Diameter: 97mm(3.818). Mounting Depth: 35mm/(1.37).
Magnet Protection: Plastic Water Guard. Application: Boat, yacht, SPA, swimming pool, ATV, UTV. All items will be tested in advance before sending out. Guzare, our company is dedicating to reseach & development of marine audio series products. If you are dissatisfied for any reason, please donot be quick to leave negative/neutral feedback.Our working time:Monday to Friday.