Part number 0311-961816 describes an Aero (OEM) Easy Cover Chain Cover Lower, Polished Aluminum. This specific component is designed for Aero Industries Easy Cover tarp systems, particularly for models in the #450-#475 series. It functions as a protective cover for the lower part of the chain mechanism within the tarping system. Made from polished aluminum, it offers durability and a clean appearance. This part is essential for protecting the chain from environmental elements and debris, ensuring smooth and reliable operation of the tarp system.