A stackable container assembled from a blank of a sheet material, for example corrugated board, includes a base and upstanding sides and ends, the sides and part of the ends having double thickness and the ends having extension pieces which confront the sides and provide corner bracing elements which each include a support tab (26, Fig. 1) and a bracing tab (28, Fig. 1) extending diagonally across the corner, the bracing tab being supported by the support tab. IMAGE
展开▼