Accurately Cover Perfect Fit: The Helix 8 Unit Cover Is Made Features A Robust Rubber Interior,1:1 Ratio Open Mold Design, Beautiful Cut To Fit The Button And The Reserved Grooves Perfectly Correspond To The Buttons On The Surface, So The Helix 8/9 Case Tightly Fits And Snug On Your Fish Finder’S Screen, Safety Protection/Prevents Falls And Bumps Compatibility Model: Not For Flush-Mounted Installations ! HELIX 9 MSI GPS G4N, HELIX 9 MDI GPS G4N, HELIX 9 CHIRP GPS G4N, HELIX 8 MSI GPS G4N, HELIX 8 MDI GPS G4N, HELIX 8 CHIRP GPS G4N, HELIX 9 MSI GPS G3N, HELIX 9 MDI GPS G3N, HELIX 9 CHIRP GPS G3N, HELIX 8 MSI GPS G3N, HELIX 8 MDI GPS G3N, HELIX 8 CHIRP GPS G3N. Will not fit first-generation HELIX 9 or HELIX 9 G2N models[NOTICE: Please make sure to disconnect the battery before putting the lid on for storage] Perfect Protection Screen: Black Helix8 Series Neoprene Unit Cover Is Made From 5mm Thick Silicone, Don't Worry About Its Screen Breaking Or Getting Sunburned One Day! Providing Good Protection For An Expensive Fish Finder! Waterproof, Sun Proof, Dust Proof, No Yellowing, Easy Clean,Give You A Full Sense Of Security Extra 2 Pcs Straps: The Heavy Duty Fish Finder Sun Cover For Helix 7 With 2 Nylon Straps, Prevent It From Being Blown Away By Strong Winds In Bad Weather And Stays On Securely At Highway Speeds That Will Not Blow Off The Unit, Easy To Disassemble And Strong Enough Advice And Help: Cover For Helix 8 Has A Handle On Both Sides To Make It Easy To Put On And Take Off With Both Hands, No Installation Skills Required, Durable And Perfect Fit, Protection For Fish Finder! Not For Use While Trailering Your Boat, Please Contact Me If You Have Any Questions Accurately Cover Perfect Fit: The Helix 8 Unit Cover Is Made Features A Robust Rubber Interior,1:1 Ratio Open Mold Design, Beautiful Cut To Fit The Button And The Reserved Grooves Perfectly Correspond To The Buttons On The Surface, So The Helix 8/9 Case Tightly Fits And Snug On Your Fish Finder’S Screen, Safety Protection/Prevents Falls And Bumps.