Greenheck MultiSPEC™ Exhaust Fans Deliver Industry-Leading Performance

June, 2022

Greenheck’s new MultiSPEC™ SP-LP ceiling exhaust fans provide high efficiency, powerful performance, and quiet operation in a low profile design. Powered by an electronically commutated motor (ECM) with constant CFM adaptive, variable speed, the MultiSPEC SP-LP is programmed to overcome static pressures of 0.4 in. wg and above associated with common multifamily installations. Greenheck’s specification-grade ventilation fans are the only fans designed, tested and certified (air and sound) for 0.4 in. wg andGreenheck MultiSPEC SP-LP Exhaust Fans above ensuring air movement as stated so projects meet code requirements and callbacks are eliminated.

Featuring three built-in high-speed airflow settings of 50, 80 and 110 cfm, the virtually silent EC motor reacts to increased static pressure by increasing its speed to ensure the required airflow to remove unhealthy air and moisture. With airflow up to 110 cfm, the MultiSPEC SP-LP series is the most powerful low-profile exhaust fan on the market.

The SP-LP’s low profile 3 ½-inch housing depth allows for wall or ceiling installations and easily fits in a 2x4 stud bay. Ideal for multifamily applications such as apartments, condominiums, hotels and dormitories, the MultiSPEC SP-LP is certified for Air and Sound through the Home Ventilating Institute, ENERGY STAR® Certified, and ETL Listed for tub/shower enclosures when GFCI protected.  

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About Greenheck

Greenheck is a global leader in engineering and manufacturing air movement, control and conditioning equipment. For 75 years, we have been committed to promoting the highest levels of indoor air quality by offering the widest range of ventilation products for commercial and institutional buildings. Through superior customer service, we continue our legacy of innovation as experts in air movement by connecting our mechanical representative partners and customers with the newest products. With our CAPS® product selection tool and HVAC University product education series, Greenheck offers technology and product knowledge to ensure that when you work with us, you are working with the easiest company to do business with.

To learn more, visit or contact Greenheck, P.O. Box 410, Schofield, WI 54476-0410, (715) 359-6171, FAX (715) 355-2399.