The ADA secondary handrail system can be easily installed on-site without any special tools. It can be mounted to any wall surface or railing. (Vinyl, wood, composites, steel, concrete or aluminum). The rails are 1-1/2″ outside dimension, which meets “Americans with Disabilities Act” grasp requirements. The railings have also been tested, and complied to, requirements within the International Residential and Business codes. The ADA railings are available in White, Black, Almond and Acorn colors. These railings offer a hidden fasteners feature.