Jack stands would raise the underside from 7.25" to
16.75", but would be in the way.
Well made 14" wood boxes would raise the underside to
21.25", and provide better access.
Here's a description of
cribbing, safety concerns, and details about making the boxes in 2 parts.
I'm planning to make the boxes shown below,
described here, but in 2 parts like the previous ones.
