I raise my rabbits on wire in wire cages. The floor wire is 1″ x 1/2″ and sides are 1″x 2″. I have always had happy, healthy rabbits. I was ready to write up a post on raising rabbits on wire floors, but Shiny Satins Rabbitry has a few great posts on this subject and I could not agree more with what they have written. So go and check it out!
I know this is controversial subject and some rabbit raisers will disagree with wire floors. I do feel that some breeds of rabbits would do better on slatted floors such as Rexes as they are known to have less fur on their hocks and more prone to sore hocks.
These links were shared with the permission of Shiny Satin Rabbitry