Drain hose?

[Shortbus PA]

I'm converting an International Short bus and after demo I have uncovered what I think might be a drain hose (about the size of a garden hose) that comes from the roof interior and exits through hole in the floor. Is this something I need to keep? Or can I remove it patch the hole in the floor?

[Tejon7]

I most likely won't know what it is, but I AM very curious to find out the answer. Posting a pic will help wiser people identify the hose in question.

[HamSkoolie]

Yep, post pics or put them somewhere we can see them. If you have a YouTube account a video there.
Without a visual we can only guess


If it had, or was set up to add, a roof top Air Conditioning unit it could be a simple drain line for condensate from an evaporator.