FEFCO 0427 Postal box, hinged lid with locking tabs

Length Width Height Thickness

Nib Lock tab Nicks

12×12 mat — 10.30″ × 9.08″

0422's tray — end walls folding back down inside themselves, tabs locking into slots in the base — under a full lid hinged off one side wall, carrying its own front wall and side flaps. The lid's outer corners are rounded at the wall height, struck about the front wall's hinge corner. The catalogue draws the corner flaps meeting in the middle and the tabs one board thickness proud; here they stop short and the tabs follow the Nib slider. FEFCO catalogue, p.53 ↗