This proposal offers the Uniflow reactor internals in two separate categories; the internals that are supplied only by UOP (“UOP supply”) and the internals that can be supplied by either UOP or other internal fabricators (“optional UOP supply”). The Purchaser will need to install both “UOP supply” and “optional UOP supply” internals to achieve the desired performance of the Unicracking unit. As a part of “UOP supply” equipment, UOP specifications and drawings for “optional UOP supply” will also be furnished. UOP specifications and drawings for “optional UOP supply” include sufficient details for fabrication, allowing the Purchaser additional flexibility in equipment procurement to best meet the Purchaser’s needs.