If you have many windows that you wish to tint, it will save you even more money if you buy the tint by the roll. If you have only a few windows, we recommend a kit. Tint by the roll comes in widths of 3 feet, 4 feet, 5 feet and, in some cases, 6 feet, and in lengths from 10 feet to 100 feet. You should use the order form for a (residential/commercial) pre-cut kit to calculate the price for the windows you need, then compare that total price with the price of a roll of film that would cover the same square area. By doing so, you will see which way is the more cost effective for your needs.