The P5 is designed for use with the Broan Elite RMIP series * 460 CFM, 10.5 Sone (vertical discharge) or 500 CFM, 10.0 Sone (horizontal discharge) performance - HVI Certified * Rough-in kits are included to make the installation clean and simple * All our blowers are designed for quiet operation using the finest motors and balance wheels * Internal Blower for RMIP series, 500 CFM, 3-1/4-Inch by 10-Inch duct size at discharge, 120-volt/60 Hz