The Advanced Side Entry System is designed for confined space entry/retrieval and rescue operations involving horizontal entries with vertical positioning or retrieval required inside the space. The Advanced Side Entry System may be used with the model 8511231 External Adjustable Tank Collar for adaptation to different manways. It may also be used with a permanently mounted base and extension post (8514803). The Side Entry System features flexible setup options and a fully articulating boom system. It is fully adaptable to an infinite number of manway designs and surrounding configurations. The 8514803 Arm Assembly is part of the Capital Safety UCL Side Entry system, designed for confined space entry and retrieval and rescue operations. It acts as an extension, attaching to a DBI support post (8514796) and mast extension (8510101). The unit directly connects to a DBI-SALA winch, but it's not included. The whole system when put together acts as a fully articulating boom system and is versatile in its entry usage. DBI-SALA and Capital Safety produce the most trusted confined space entry and fall protection equipment in the business.