I would avoid something like this like the plague for various reasons.
1. The wood has been treated with varnish and chemicals and is immediately unsafe for chameleons.
2. Chameleons need a lot of moisture (misting and dripping) and this thing would likely soak up water and be destroyed quickly.
3. Don't house two chameleons together. Bad juju. Stress and fighting will lead to one (or both) ending up dead quickly. Chams are solitary.
4. It also doesn't look deep enough. It is likely plenty tall and wide, but not deep enough. Adult panthers should have a MINIMUM cage dimension of 24" wide, 24" deep, and 48" tall.
Honestly my friend, don't waste your money. Sure it is a pretty peace and would be a nice display, but it is going to be more trouble than it is worth. Save your cash and buy a nice Dragon Strand cage.