At the 2025 International Builders show, Bryan Uhler and DJ from ViewRail discuss exterior railing systems. They talk about hidden side mount base rail systems, exterior spiral stairs, flight mono systems, surface mount applications, and blade spin designs. They also mention the importance of electrical requirements, design sequences, and shop drawings for installation. The perforated panels are highlighted for privacy in outdoor spaces. ViewRail's website is mentioned as a resource for more information. The focus is on showcasing innovative and architectural railing solutions for residential and commercial projects.