What are the internal dimensions of the 037025H Mobile Storage Unit? The internal dimensions are approximate 35-½" x 21" x 21". What is the maximum weight the 037025H Mobile Job Chest will hold, and in what temperature range? For outdoor use, this chest can hold up to 100 lbs in temperatures of 0 to 50 degrees Celsius. What is the size of the wheels on the 037025H? 5 diameter