Fibox ARCA 403021S is a double-insulated polycarbonate wall-mount enclosure measuring 400 x 300 x 210 mm with an IP66 rating and IK10 impact strength. It ships with a grey opaque door, PUR foam gasket, mounting plate and swing-handle lock in RAL 7035. The freestanding, outdoor-suitable housing accepts metric cable glands and supports depth-adjustable mounting plates for control gear and terminations. Typical applications include outdoor distribution, industrial control, and process instrumentation where a robust, corrosion-resistant enclosure is required.