Using technology similar to the Jet PCM, the Jet module provides the ultimate in power tuning. Point-by-point air/fuel, ignition advance, transmission, and various other tuning points provide performance gains and, in some cases, improved fuel economy.
In this case, a chandelier with a diameter of 20 inches would work well in an 8-foot by 12-foot room. For a dining room, the chandelier should have a diameter around 12 inches less than the table is wide. It's always better to have a chandelier that is slightly too big than too small. Measure for the length.
A rule of thumb for crystal chandeliers: If your dining room is eight feet tall, hang the chandelier 30 to 34 inches above the table. If the ceiling is more than eight feet high, shorten that chandelier chain by an additional three inches.