3M™ DBI-SALA® Confined Space Integrated Manhole Collar Davit Mast Base fits 26 in. to 28 in. (66 to 71.1 cm) diameter opening.

The Advanced™ series hoist system bases are designed for manhole and confined space entry/retrieval applications. Portable units are constructed of lightweight high-strength aluminum and adjust to fit most standard entries. Our permanent and clamp-on bases are available in aluminum, zinc plated and stainless steel construction offering maximum flexibility. We offer bases 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 Advanced™ davit mast, and together form a perfectly matches confined space rescue and work support system. When it comes to confined space entry/rescue, it is essential that equipment operates perfectly and quickly. DBI-SALA® has an extensive line of rescue and retrieval systems with decades of proven field service. Safety engineers and site directors trust DBI-SALA® for the type of high quality, rugged systems that will ensure top performance when it is needed the most. Show Less