Permavoid Subbase Replacement Full System Subbase Replacement Full System: Collection, Treatment & Storage. Replace up to 18 inches of aggregate subbase and 12 inches of excavation while managing stormwater within Permavoid. Listings CAD Files Description Available Types RFQ & Share CAD 3D Specs About Media Education PrintCAD Share 1. Permavoid Subbase Replacement Full System - TF12S-FF04S-PV150-SR 061215 Has CAD Has About Has Media Share 2. Permavoid Subbase Replacement Full System - TF12S-FF04Z-PV150-SR 061215 Has CAD Has About Has Media Share All Available 2D CAD Files Back to top Permavoid Subbase Replacement Ful... Download DWG Permavoid Subbase Replacement Ful... Download DWG Company Resources Back to top Brochures Permavoid Intro Brochure