The horizontal rotary extension provides the ability to install a rotary on the side of a bin wall, such as those in concrete silos, up to 12” thick. This extension design allows for rotaries to be side-mounted with minimal risk of damage during operations. This optional assembly includes an extended drive shaft with a protective shaft guard that keeps the shaft centered and BinMaster’s “no packing” seal at the end of the shaft. Standard lengths of 6”, 8”, 10”, or 12” are available for both the MAXIMA+ or BMRX rotaries.