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 9' that adjusts in 1' increments up to a 17' step ladder.