PetSafe Extra Boundary Wire For Containment System

Expands your containment system beyond the initial 500 ft. of wire that accompanies the in-ground fencing kit. Each spool is 500 ft/150 meters of 20 gauge, solid core, burial-grade wire. Below is a guide to help determine the amount of wire you will need based on the area in which you want to contain your pet. Length of wire needed will vary due to the amount of twisted wire and layout used. For proper system performance, the splice connection must be waterproof.