We carry 43' and 77' Compact Crawlers also called Atrium Articulating Boom Lifts. They are lighter weight units that have low ground pressure due to the displacement in the non-marking tracks and also in the foot pads when the unit is in working position. The 43' unit can travel through a single door, and the 77' unit can travel through a double door. Both units will Elevate you in areas that no other lift can touch because of the weight and self-leveling outriggers.