Lennox 87W48 Motor 324846 701 The Heil Quaker ICP 1171048 The Heil Quaker ICP 1171048 Blower Wheel is a critical OEM replacement centrifugal fan designed for high static pressure applications in residential and light commercial HVAC systems the iO FAV ENHANCED offers a streamlined single adjustment setup and optional outdoor temperature and humidity limits to prevent the introduction of extreme air into the building envelope Always verify the orientation of your blower wheel before finalizing the installation Quiet Performance: Soft start capabilities and balanced rotation minimize mechanical vibration and acoustic noise