APT® ducted double wall rigid entry boots allow you to create watertight connections between APT® 4” XP pipe and double wall fiberglass containment sumps. These boots are easily installed to the sump wall using adhesive (included) without the additional messy fiberglass work required. Rigid entry boots require only a single 3 ¾" entry hole for installation, eliminating the time-consuming process of drilling multiple holes as well as the templates they require.