The In-Line Tub is a great option for a space saver. Line the tubs up in a row for crowded spaces. Features: The 48? is 20 gauge 304 stainless steel. The 58? is 18 gauge 304 stainless steel. Dogs of all sizes can easily walk up the clip on ramp themselves. 20?H legs with leg levelers. Water ports are on the center front of back splash, 3? down Includes a clip on ramp. Sliding ramp is optional from the side. Optional accessories include door, floor grate and plumbing kit.