The MIlt NanoSoftLite is a concept, as much as it is an actual fixture.
In the movie, "Light It Right", we used the full 20"x30" foam core as the main base and backing.
The sides are 9" high.
We inserted spacers so the sides will clear the light sockets when folded, and double spacers on the end doors to clear
the height of the sockets and the folded doors.
We riveted the Velcro corner fasteners to provide extra strength and placed the rivets wide enough to support the egg-crate
and diffusion material.
We have also created a 4'x6' version of the light, but it's still in the testing stage of development.
See user Serena Steuart's wonderful large nanolight and building instructions