NTRAK Modules are tables that "C" clamp together to form large N scale train layouts at conventions, shopping malls, club rooms, and as home layouts. The basic module is two feet wide, four feet long, and 40" high. There are adjustment bolts in the legs with a two inch adjustment range. The three tracks are common to all modules and the same electrical connectors are used on all modules. This makes setting up layouts a quick job. There are optional sizes and track locations to give a great deal of flexibility to the system.