Butler Manufacturing has introduced three high-efficiency wall systems that enable community and industrial building decision makers to prepare for anticipated changes to energy codes. The patented designs of the eShadowall™, eStylWall™ flat and eStylWall™ fluted wall systems enhance the energy efficiency of new and retrofit building applications. The assembly designs of these new products can deliver significant life cycle savings. Thermal spacer blocks are field-applied to the panels at structural fastening locations, preventing thermal short circuits, adding depth to accommodate thicker layers of insulation and increasing thermal efficiency. Resulting thermal values are tested and validated through the accredited Guarded Hot Box testing lab at the Butler Research and Development Center in Grandview, Mo. For more information, visit www.butlerbuilder.com.