These are modular in constructions, made up of blocks of interlocking
modules, as shown in the attached figures. These blocks can be
fabricated by plastic molding machines; each block is a 2x1x0.2 feet
plastic molded container, the air in the container acts as an insulator
making them ideal for constructing winterized home. They snap on next to each other and can be placed in the form of a wall, making them ideal for a quick building project.
Ashfaq A. Khan