All of our shelters meet and exceed ATSA, ICC-500, FEMA P- 361 and FEMA P-320 Standards. We have taken the initiative to have every shelter and door tested. EF-5 Shelters Inc. has been a member of ATSA since 2010 and all our shelters are certified to be installed under any government rebate. We have had 30 years of experience in building and installing tornado shelters. Our shelter designs are the most superior product around and all of our shelter designs have been certified by a professional engineer. All of our shelters have been tested to withstand an EF-5 tornado. We pride ourselves on pleasing our customers. It would be an honor to do business with you!