ECMA B10.04.00.00 Four-double-wall tray, webbed corners

Length (A) Width (B) Height (H) Thickness

Nicks

12×12 mat — 9.83″ × 10.83″

Unglued selflocking tray with 4 double walls; locking flaps system with fold over ends with webbed corners. Every corner closes on a single diagonal fold — a web — so all four walls rise together with nothing to lock and nothing to glue. Each wall then folds back down inside itself and ends in a tab that turns in and lies on the base. The corners are cut as shallow wedges rounded at a third of the height, the radius the catalogue draws. ECMA catalogue, p.36 ↗