MultiSpec SP-LP0511 50/80/110 CFM Low-Profile Bathroom Exhaust Fan

MULTISPEC SP-LP Series is powered by an electronically commutated motor (ECM) with Constant CFM adaptive, variable speed technology programmed to overcome the static pressure associated with common residential installation scenarios (0.4 in. wg and above). The motor reacts to increased static pressure by increasing its speed to ensure you have the airflow required to remove unhealthy air and moisture. Key features: ENERGY STAR rated, virtually silent EC motor with 3 high speeds (50-80-110 CFM), constant CFM technology, 3-1/2-inch housing depth – the low profile is ideal for wall or ceiling installations, easily fits in a 2x4 stud bay, L-shaped bracket for support and ease of installation, ETL listed for tub/shower enclosure when GFCI protected, 3-year warranty on ECM motor and parts.
Availability:  51 in stock
SKU: SP-LP0511

Greenheck’s specification-grade ventilation fans are all tested and certified (air & sound) for 0.4 in. wg and above, so there are no surprises, you get the airflow that you paid for and eliminate callbacks.

The SP-LP series is the most powerful low-profile exhaust fan on the market, offering airflow up to 110 cfm.

  • ENERGY STAR® rated
  • Virtually silent EC motor with 3 high speeds (50-80-110 CFM)
  • Constant CFM technology
  • Plug and play sensors available
  • 4”, 5” or 6” duct connector
  • Easy installation bracket
  • Oval Outlet: Oval44
  • Oval Outlet: Oval46


ENERGY STAR® is a market-based partnership formed to reduce greenhouse gas emissions through energy efficiency and make it easier for consumers to identify energy-efficient products that offer savings, performance, features, and comfort.

To earn the ENERGY STAR label, products must meet strict energy efficient standards set by the U.S. Environmental Protection Agency (EPA) for energy consumption, air and sound performance.


Products specifications
Attribute name Attribute value
Grille Length x Width 13 x 13 in
Outlet Diameter 5 x 2 1/2 in
Height 3 1/2 in
Depth 3 1/2 in
Weight 10 lbs
CFM Range 30-110
FRPM Range 752-1017
Max. Operating Amps 0.22/0.29/0.35
Mounting Location Ceiling
Mounting Position Horizontal
Drive Type Direct Drive
Impeller Type Centrifugal Wheel
Impeller Material Polypropylene
Housing Material Galvanized Steel
Speed Controllable Yes
Sones (at 0.0" wg) <0.3 -2.3