By Appointment Only Sierra Pacific Windows make dozens of different windows and doors, in thousands of different sizes, shapes and operating styles. Our product lines range from totally custom expansive windowscapes, to high quality windows that provide high performance. We’ll make just about anything you want, and craft it with as much care and attention as if we were installing it in our own home. When you consider our commitment to the environment, we think you’ll feel very good about purchasing Sierra Pacific Windows and Doors. Our seed-to-window approach to construction is made possible by our parent company, Sierra Pacific Industries, which owns nearly 2 million acres of forestland in California and Washington State.