With AERCO's Benchmark 4000 and 5000N, you'll still SAVE time and money by reducing install, startup and operating costs; SIMPLIFY startup and maintenance; and STRENGTHEN system performance and efficiency... but now you can fit all 4000-5000 MBH in a freight elevator and through a standard 36 " doorway. More power in a small footprint. 800.526.0288 | aerco.com ©2020 AERCOhttp://www.aerco.com