Ideal when storage space is limited. The lightweight and low-profile design allows for storage in closets or tight spaces and easy to transport. Each step is serrated and has a spring loaded locking pin that automatically engages to secure step height. The release mechanism provides a smooth automatic closing design. These ladders extend in 12" increments. Top bumper guards and molded rubber feet protect walls and floors against scratches. Meets OSHA and ANSI specifications.