Seasonal Reflections has a fantastic selection of G-40 stringers and stringer spools for decorating your home, business or commercial location. Our stringers are all commercial grade quality and will last for a long time so you can feel comfortable putting them up on buildings, trees or other locations. G40 stringer spools can be used to achieve lengths of 150' or more depending on the amps that you are pulling with your bulbs. If you need assistance in understanding how to calculate the amps that your light strand will require please feel free to call our guest service specialists for assistance.