I have to agree with Kyle on all of this. I wouldn't recommend using that small of a glass cage for a panther. When they are little you can get away with using a smaller screen cage as there is still plenty of air flow and you can better regulate the temperature gradients that are needed. As they get older, you upgrade to a larger size.
With a glass cage, it doesn't work the same way. In a cage that small it will act as a mini oven since you will still be required to have the same lighting as you would with a screen cage and there will be very little air flow through the cage. They need different levels within the cage to achieve different body temperatures and a small glass cage will not offer that. Also, you will run into drainage issues the very first day. If you are misting correctly, you will more than likely have pools of water in the bottom of the cage as it has no where to go.
I would highly recommend you looking into another cage (Screen) for your panther. The Exo Terra cages are great and I love them but not for panthers unless it is the XL version.