Picture frame comprises rectangular base with flaps on all four sides which are folded over to form outer frame and inner frame which retains picture and has tabs on its outer edges fitting into slots in base

摘要

The picture frame comprises a rectangular base (1) with flaps on all four sides. These are separated by folds into three parallel sections (a, b, c) which are folded over to form the outer frame. An inner frame (2) retains the picture and has tabs (e) on its outer edges which fit into slots (k') in the base.