Here is our Custom Aluminum Battery Tray! The slick design of this tray allows water to flow out and not be held, it has slots from side to side or front to back for our battery strap to run through depending which way you need to strap your battery down! 4 pre drilled holes in each corner for securing to the boat (stainless screw provided), and vibration foam pad included! PSA: if you need a 31 tray you can order a 34 size tray and it will work it will just be 1/2" longer! Contents of each tray include: - custom aluminum battery tray - foam pad for vibration - 4 stainless screws - 1 battery strap Tray Sizes are below: 18Ah Tray: 7.1 L x 3 W inches 30Ah / 40Ah / 50Ah single tray: 8 L x 5.4 W inches 60Ah single tray: 9.3 L x 5.7 W inches Group 24 tray (70Ah, 80Ah, Slim 100Ah): 10.4 L x 6.9 W inches Group 31 tray: 13.3 L x 7.1 W inches Group 34 tray (300Ah dual purpose and 344Ah): 13.5 L x 7.25 W inches Triple 30/40/50Ah tray: 16.25 L x 8.2 W inches Triple 60Ah tray: 16.6 L x 9.3 W inches