We supply our customers with different size units to fit all of their belongings! Boxes -to-Boats has been in business since 1993! 76 Unit Self-Storage facility located 2.6 miles South of Robbinsville, NC on US-129. We offer a wide variety of unit sizes at the lowest prices in the area. Unit Size Range: 5 X 10, 10 X 10, 10 X 15, 10 X 20, & 10 X 25.