Tension wire may be used for a variety of applications. It is commonly used as a bottom tension wire on chain link fences and serves both structural and aesthetic purposes. Bottom wire helps prevent animals and people from ‘pushing’ their way underneath a fence. It will not prevent an animal from digging underneath a fence, however may help discourage this behavior. Tension wire may be retrofitted on to existing fences. Wire would be stretched on outside and slid up under the bottom of the fence. We recommend bottom wire on all chain link fences, especially vinyl coated chain link since it tends to be more elastic in nature. Bottom wire is also recommended on all chain link fences installed for security purposes. Tension wire is occasionally used in lieu of top rail on a chain link fence. This cuts down on costs significantly and may make the fence more difficult to climb.