From the release:
The set consists of:
resin short walls - 4 elements
resin long walls - 4 elements
acrilic short walls top plates - 4 acrylic elements
acrilic long walls top plates - 4 acrylic elements
4 small acrilic elements for resin short walls
8 big acrilic elements for resin long walls
The fortification set overall length is approximately 72cm / 28 inches
All resin elements are made from high quality resin.
All acrylic elements are made from 3mm thick fluorescent and transparent acrylic.