Spring action pole fits standard doorways, narrow hallways and aisles. Compress the 2 sections, place in position, allow spring to open out the sections. Results in secure barrier to prevent entry. Easy-to-read sign in black on bright yellow. Extends 750mm to 1.1m. Excellent in public restrooms, airports, train stations. Use at lifts, escalators, hallways, stairways, factories, hotels, hospitals, schools.