We recommend measuring the distance where you plan to use the LongNet. The net must be 1-3 meters shorter than the distance from one attachment point to the other. The Kevlar cord is longer than the net itself and is adjusted slightly when the net is installed for the first time. For example, if the distance between the two attachment points is 22 meters, you record this information with your order and we will send you a net that is 21 meters long. The Kevlar cord on the top of the net is adjusted when installed for the first time.