The A4S boom is 18.5 ft. Longest element is 32 ft. 5.5sqft surface area, weighs 37lbs. The 3L SteppIR boom is 16ft, all three elements (fiberglass tubes) are 36ft, 6.1 sqft surface area, weighs 51 lbs. It's a push. -- R. Kevin Stover AC0H