Your #1 Source For Replacement Beacon Morris Convector Elements And Knob Assemblies! Convector elements are available with single or dual inlets. Knob assemblies open and close the damper and consist of the knob, screw, nut and wrench. Replacement convector elements and knob assemblies leave the factory in 3 short business days! Simply search for your part number using the search bar in the upper right hand corner or visit the Contact Us section if you need help placing your order. Are you looking to replace your entire convector, cabinet and all? Visit our Beacon Morris Convectors section now.