The SkyScraper is perfect for high vaulted ceilings, churches, auditoriums, gymnasiums and other home and industrial applications. It is also ideal for working over benches and stadium seating. And because it's portable, the SkyScraper can be used in places where a motorized lift or bulky scaffolding simply can't go. The SkyScraper is made of heavy-wall, 6005-T5 aluminum-the very same material used in aerospace construction. In fact, The SkyScraper is government-rated to hold up to 300 pounds, so it can handle virtually any industrial application. The M17 SkyScraper is an A-frame ladder of 11ft. that adjusts in 1 ft. increments up to a 21 ft. step ladder.