TC Bros. Holey battery boxes come in two sizes for YTX14AH, 12N14 or YTX20, YB16 series batteries. Inside dimensions of small battery box are 3.75in wide x 5.5in long. Inside dimensions of large battery box are 4in wide x 7in long. Proudly made in the USA! Includes stainless mounting hardware and rubber cushion to isolate battery from vibration.