Banded or coupled shades are special solutions to covering wide windows. Sometimes fabric may not be available at the width's you desire and railroading is not an option. Placing multiple bands of fabric on one tube may be the solution. There are times when you require shades to fill an entire curtain wall however they may not need to be individually controlled. Coupling multiple shade systems together with a single clutch or motor may be an economical solution. When multiple fabric's are desired for the same window (such as different opacities), you will find a solution with dual shade systems.