Apparatus for supporting at least one endless movable chain conveyor for carrying articles and having a top run and a bottom run wherein a plurality of spaced apart base support members are mounted on a fixed support surface with each of the base support members having a primary plate support member releasably secured thereto. Each primary plate support member has opposite end portions and a primary support member is releasably secured to each end portion. A rigidifying tube is releasably secured to a plurality of the primary support members to provide rigidity to the apparatus which rigidifying tube in located between the top and bottom runs. Top run chain guides and supports extend between and are releasably secured to adjacent primary support members and bottom run chain guides and supports are releasably secured to the primary plate support members. The apparatus is substantially completely open so that all portions thereof are readily available for inspection and/or cleaning.