Note: Only for Gimbal Mount installations. If HELIX 7 Series is mounted in-dash the unit cover will not fit. It is primarily used as a dust and sun cover. Made of rainproof fabric ，great for rainy days on the boat Built-in Shockproof Pearl Cotton When you take your fish finder off and throw it in your box of fishing gear. This is good solid protection for the screen. Rainproof material, even in rainy days will keep the machine dry Easy To Disassemble. This fish finder cover can effectively protect the sun, dust, rain damage to the device. In addition, there is a built-in anti-shock cotton, can protect the screen from scratches.