The dimensions of the electric wheelchair, including its height, width, length, and turning radius, play a crucial role in maneuverability. Most power chairs have a width ranging from 24 to 30 inches, making it vital to ensure the wheelchair can navigate through doorways and hallways. The turning radius, typically between 20 to 30 inches, affects how easily the wheelchair can change direction in tight spaces. For users with limited space at home or frequent outings, a compact model may be necessary.