Wooden
Sides
Wooden sides allow for better set up for interior settings
because there is more surface to mount onto. Also there is
less reflection within the habitat for the animals, which
minimizes stress.

Should I get glass sides or not? Here
are some points that may help you decide:
1.) The interior side walls
can be used to mount vines & greenery adding to a more
realistic view of the habitat.
2.) It allows for supports on the side to hold a basking
tree shelf crossing the interior of the unit.
3.) No maintenance in trying to keep the sides clean, glass
can get dirty and needs to be kept up with.
4.) Looks attractive when peering into the unit rather than
seeing objects on the outside of the room.
5.) Less reflections which
can stress some animals.