The largest and heaviest duty Matthews Junior Boom (5.6-10 ft.) measures 68 inches (172cm) when fully collapsed and will extend to over 10 feet (300cm). The Junior Boom has a 25-pound (12kg) counter-balance weight attached and features the same tilt-locking and mounting mechanism found on the Baby Boom. Matthews Junior Drop Down can be used to keep light banks level. The boom extends from 67.5" (172cm) to 120" (300cm).