Meeting the requirements of both the International Residential Code and the International Energy Conservation Code these Energy Efficiency Certificate Stickers are a convenient handy tool that you won't want to be without! Created due to 2006 energy code requirements in both the IRC and the IECC that mandate that some type of certificate be installed these stickers list the general insulation window performance and equipment efficiency details. Check out our app, DEWALT Mobile Pro™. This free app is a construction calculator with integrated reference materials and access to hundreds of additional calculations as add-ons. To learn more, visit dewalt.com/mobilepro.