This enclosure system is designed to give you years of service with minimal maintenance. The Heavy Fence and Heavy Posts and Sleeves create an enclosure that is strong and durable. Our Chew Guard barrier is included as an added protection against the sharp teeth of small critters and your dog. When installing your fencing in conjunction with the Chew Guard, you also have the added option of being able to install your fence at the minimum height of 4.5' or a maximum height of 5.5'. Detailed Instructions included.