3M™ DBI-SALA® Floor Mount Sleeve Davit Base is of steel construction. The fastener pockets allow for bolt-in installation into existing concrete or steel structure. Comes with PVC sleeve liner. The 3M™ DBI-SALA® Floor Mount Sleeve Davit Bases are designed for confined space entry/retrieval applications. Our permanent bases are available in zinc plated and stainless steel options. Bases are available for a variety of applications including floor, wall, core, deck, flush, barrel, forklift and hitch mount to name just a few. All bases are designed to use in combination with an Davit Mast, and together, form a confined space rescue and work support system.