CARTONNAGE B20.04.00.54.000 Hinged-lid box, webbed corners, three-winged lid

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

Nib Lid height (Hₜ) Nicks

12×24 mat — 11.59″ × 9.91″

A B20.04 tray under a lid that drops over the outside of it, not into it. Every corner closes on a diagonal fold, a web, so nothing needs gluing. The lid's three walls fold back inside themselves and end in tabs that lie on the lid top, trapping the webs: nothing lifts without unfolding one, so the lid cuts no lock at all. The tray, with only two such walls, keeps its locks. Closed, the lid holds on friction alone. Ours, not a catalogue code.