attwood 9084-1 Large 29/31 Series Vented Marine Boat Battery Box with Mounting Kit and Strap, Black For large battery applications (9-3/4" maximum battery height) Vented black battery box Interior Dimensions: 15-7/16" x 7-1/8" x 7-1/8" x 9-3/4" Strap Length: 38" Mounting hardware included