IMPORTANT: This step will need to be completed before continuing. You will need to use these measurements to purchase a replacement picket needed later in the guide.

Use the tape measure to measure the height, width, and depth of the picket.

Use these measurements to purchase a replacement picket. Home Depot and Lowe's are good places to purchase a picket. If you are unfamiliar with what you are doing, ask any worker there for some help and they will help you get your replacement.