Looking for a friend, needs a set of boxes to put tarps in to fit either between trailer axles or between fuel tank and drive axle.

Where should we look for a good price and good product.

Most trailer dealers sell boxes. If you are around Nashville, TN, Pro Tech is in Laverne near the TA off I-24. You can sometimes buy seconds with minor flaws or scratches for less than retail. There is also another manufacturer in Bristol, TN. I believe their name is Sturdy Lite. I believe Road Gear is in Birmingham, AL. They may have other facilities closer to you. Some truck dealers also sell boxes.