A large part of the design is choosing how much space will be between each picket. Aluminum fencing comes in panel form, and each panel has vertical pickets set a specific length apart from one another. This space depends on the design and the practical use of your fence. For example, if there are animals on your property – or if you are trying to keep them out – consider using puppy pickets that have extra pickets along the bottom part of the fence to allow less space for any animals to squeeze through. Similarly, you may wish to have privacy panels as part of your fencing design to create a more private oasis within your property and stop prying eyes from peeking in.