Dimensional control of injection molded products remains an important issue as applications require increasing precision. Accurate dimensions of a product result not only from well tuned manufacturing processes, but also from sound design and engineering analysis. This article introduces a model that predicts edge deformations of deep container walls. The model was developed using energy methods and predicts thermoelastic deformations caused by a drop in temperature once the part is released from the mold. The model was validated using results from FEA simulations as well as comparisons with field measurements of parts made of Polypropylene (PP). In general, good agreement was found. Material properties and process conditions were measured for the analyzed cases, which contributed to the accuracy of the results. POLYM. ENG. SCI., 50:1007-1018, 2010. (C) 2010 Society of Plastics Engineers