APT® double wall rigid entry boots allow you to create watertight connects between APT® XP double wall flexible pipe and double wall fiberglass containment sumps. These boots are easily installed to the sump wall using the included adhesive with no additional messy fiberglass work required. Rigid entry boots require only a single 3¾” entry hole for installation, eliminating the time-consuming process of drilling multiple holes as well as the templates they require.