Building a beehive have Flow frames nothing else, a Neophyte

Hello to everyone here, I am Reno. I recently bought a storage up for auction and it had some autoflow frames unused in boxes, something has kind of guided me to use them. I am studying all I can and now have begun to design the boxes. I have watched the langstroth 10 frame deep conversion to fit the flows but fear I may F it up. Is there anyone that you good people might know who makes and sells these modified langstroth 10 deep boxes to fit 7 flow frames? Or where can I buy just the flow frame super alone by itself unassembled no frames? I checked the Flow site but only saw the supers sold with the flow frames. Any guidance or help you may provide I thank you for in advance.May all be well and safe.