The most shockproof model in aluminium profile. Often used for heavier electronic instruments. Four millimetres of veneer plywood with aluminium foil on the outside and black cloth inside. Available in eight standard sizes.
  Inside dimensions mm
ARK 1 345x255x85+45
ARK 2 405x210x200+45
ARK 3 365x170x260+35
ARK 4 460x340x125+35
ARK 5 490x390x135+45
ARK 6 595x395x145+45
ARK 7 700x450x180+60
ARK AT 440x320x80+35