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.
Measure the size of the room and the size of your existing furniture pieces. Then determine the height of the ceiling. If the chandelier will be hanging in a dining room, measure the height and width of the table you plan to hang your new light fixture over.A dining room chandelier hung over a table should measure about 12 inches narrower than the dining table.deally, a chandelier should hang at least 6-1/2  7 feet above the floor in an entryway, living room or hall to allow people to walk comfortably beneath it. When hung above a dining table, a chandelier should rest at least three feet above the table to allow plenty of space for table centerpieces and food.