A note to add to @jaxmarblebuns' good advice. Wire with 1" x 1/2" openings is what you want, but there is an "up" and a "down" to the 1" x 1/2" wire. When installing the new floor, make sure you have the side that has the 1/2" wire strands facing upwards. The wire being closer together supports the rabbit's feet better by distributing the weight across more area. This can be important for heavy meat rabbits.
Are you in Washington state by any chance? I opened the tractor supply link you provided and it set my store on the other side of the country. Just trying to figure out if my computer is being dumb or if the location was imbedded in the link.
Yes i am that was my bad (didn't even think of that oops)
Not a problem, it's easy enough to fix and I wouldn't have thought about it either. I shop at 3 different tractor supply locations so I'm used to checking that constantly.
