Revolutionary, heavy-duty telescopic ladder extends from a compact form to either full height or any intermediate height in between, giving you just the right height needed for the job. Safety windows on each rung turns "green" to confirm each step is in the locked position. Retract the ladder using the patented One-Touch release mechanism, and in seconds the ladder is fully closed and ready for easy transport and compact storage. Aircraft grade aluminum makes the ladder durable yet lightweight, and the elliptical double-pulled tubes add superior strength and rigidity. Non-skid feet ensure a solid grip on the floor surface, and top rubber bumpers protect walls against scratches. Use it at the office, home, warehouse, shop, farm, store or anywhere you need a ladder.