Defence lines are built from crenellated shield sections that link together into a solid shieldwall. The most common type of defence line comprises two such walls back-to-back. Imperial Aegis lines can be built and deployed at such speed they are often referred to as 'instant fortresses'. This box set contains one plastic Aegis Defence Line. This 28-peiece set includes four double blast shield sections and four single blast shield sections that can be set up in a limitless array of configurations. Joined together they provide 28' of defence lines. Also included is a quad-gun emplacement that can be placed onto one of two different mounts supplied.