On Staff FPE providing the latest in code compliance and AHJ requirements. NICET Certified designers providing AutoCAD and 3D Modeling. Project Managers have an an average of over 25 years of experience in the construction industry. RLH utilizes state of the art equipment resulting in on time deliveries. RLH prides itself on maintaing an average crew of over 20 years of experience in all types of system installations. The level of service RLH provides sets us apart from our competitors.