Yes, Flow can work with any hive, as you can shorten the frames to suit any length of box, as long as they fit the depth of the hive box. It might be simplest to use Langstroth size boxes and make up an adaptor to fit one box to another.
Please note, while we encourage the creative use of our product, disassembly or modification of your Flow Frames from their original format will void your warranty.
You can discuss adapting your hive on our Community Forum.