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Use the following table to estimate the interior space for the boulder 110:

Rectangular measurements of all rocks may have more space in the middle than listed due to width interference at the corners.  When choosing a rock enclosure for an application, note the shape of the rock as well as the application measurements.

Height (@) Length (max) Width (max) Diameter (max)
2 Inches 18
2 36 16
4 Inches   18
4 35 16  
6 Inches   17.5
6 34 15
8 Inches   16
8 34 13  
10 Inches     14
10 33 12
12     12
12 32 11  
14     11
14 31 10  
16     9
16 31 9  
18     8
       
18 28 6  
20     6
20 28 2