Premium Guard Above Ground Swimming Pool Safety Fence KIT B- 3 Spans (Agpf-kit B) Kit A is required to begin an installation. Kit B and Kit C are added to Kit A depending on the total number of "spans" surrounding your pool. Premium Guard Above Ground Pool Fencing is easy to install and makes for a great DIY project. Premium Guard attaches to the pool's existing braces and is completely modular Our square uprights are designed for ultimate rigidity and equal impact force absorption from all sides. Premium Guard creates a visually well-manicured appearance while providing safety and piece of mind.