BatteryGuard™ acts like a shock absorber and can help extend the life of your expensive battery. Excessive shock and vibration are two of the leading causes for battery failure. Megaware BatteryGuard™ sits under your battery and absorbs the gravity shock caused by excessive vibration and up and down bounce. Can easily be cut to size for smaller applications.Key Features Reduces up to 80% of the G-shock Caused by Excessive Shock and Vibration Great for Boats, Automobiles, ATVs, Trailers, RV's, or Anywhere Shock and Vibration Can Damage a Battery Dimensions: 12-3/4" × 6-7/8" × 3/8" Fits up to Group 31 Batteries Product Details Brand: Keelguard Product Type: Electrical Accessories Manufacturer Part Number: 40131 UPC: 672057401316 LNS Category: Electrical LNS Subcategory: AGM Batteries Dimensions: H 9 in × W 6.88 in × D/L 12.75 in Country of Origin: US Compare the manufacturer part number, dimensions, fitment, voltage, material, and included components with your application before ordering.Enjoy free standard shipping on all U.S. orders, including Alaska, Puerto Rico, Guam, U.S. territories and protectorates, and eligible P.O. boxes.