The cages JLR mentioned are very good cages and very popular. They check off all your boxes, but it's not necessarily true that sugar gliders must have horizontal bars. They can, will, and do climb vertical bars very well. I personally looked into the DNC or ALT cages, but personally prefer the vertical bars on cages, so opted for HQ Large Sturdy from SunCoast Gliders. You can get a cage more adapted for sugar gliders, also HQ but sold through EN called the Congo cage. The Brisbane size from EN and the HQ Sturdy by SunCoast are also good sizes for a pair to possibly a trio of gliders. I have also had the Madagascar cage from EN that housed my trio nicely before I move across country and left it behind.