Broan L300KMG 279 CFM 3.7 Sone Ceiling or Wall Mounted Ventilator

- Item #: BCI877526

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  • Controls Recommended
  • Filter Required
  • Features a powerful 279 CFM permanently lubricated and sealed motor that's specifically designed for continuous use applications.
  • Mounts directly to joists via mounting brackets which makes for an intuitive, straight-forward installation.
  • Compatible with a number of Broan multi-function and time control wall switches (sold separately).
  • Not recommended for use over bathtubs and showers.
  • CFM: 279
  • Sones: 3.1
  • Duct Size: 8 Inch Round
  • Grill Width: 14 Inches
  • Grill Length: 14 Inches
  • Housing Width: 12.25 Inches
  • Housing Length: 12.25 Inches
  • Housing Depth: 11.75 Inches
  • HVI Certified: No
  • UL Listed: Yes
Product Variations:
  • L200: 210 CFM, Polymeric Grille
  • L200MG: 215 CFM, Metal Grille
  • L250: 259 CFM, Polymeric Grille
  • L250MG: 265 CFM, Metal Grille
  • L300: 308 CFM, Polymeric Grille
  • L300KMG (This Model): 277 CFM, Metal Grille for Kitchen Applications
  • L300MG: 316 CFM, Metal Grille

Additional Broan Links

Our SKU: Broan L300KMG

This product is listed under the following manufacturer number(s):

  • Broan L300KMG

*Denotes a finish or option that has been discontinued

Broan L300KMG Product Specifications

Specification Sheet
Installation Guide
Installation Manual
Product Specifications
Amperage 2.6
CFM 279
CFM (High) 279
Collection LoSone
Configuration Exhaust Fan
Country Of Origin USA
Duct Discharge Horizontal
Duct Size 8" Round
Energy Star No
Function Utility Fan
Grille Finish White
Grille Length 14
Grille Width 14
HVI Certified No
Heater Included No
Housing Depth 11.75
Housing Length 12.25
Housing Width 12.25
Humidity Sensing No
Installation Type Ceiling, Wall
Made in America Yes
Manufacturer Warranty 1 Year Limited
Material Metal
Motion Sensor No
Night Light No
Product Weight 25.2
Sones 3.1
UL Listed Yes
Voltage 120
Wattage 212

Installation Resource Center

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Broan L300KMG Reviews

Rated 5 out of 5 by from Very happy Powerful enough that we don't need an ugly hood for our indication cooktop.
Date published: 2011-04-20
Rated 5 out of 5 by from Excellent Very quiet, very well built. Recommended
Date published: 2010-08-13
Rated 5 out of 5 by from outstanding extremely quiet and highly efficient
Date published: 2013-04-16
  • has anyone used this is a residential kitchen with an 8 ft ceiling?

    A. The Broan L300KMG can be used in a residential kitchen however it may be a bit loud at 3.1 Sones for 8 ft ceilings if your kitchen is on the small side. Let me know if you have any other questions.
  • Can this fan be vented thru the wall?


    The Broan L300KMG can be vented through the wall and will need the 8" round duct, Broan 643. The Broan LAF1 Aluminum Mesh Filter is also recommended to keep it cleaner, but not required.

  • I'm remodeling a mfrd home and want to use this fan instead of a range hood. Its a cathedral ceiling, and 9' over the cooktop. The joists at that point are only 9" deep at that point (plus drywall). Can I box in this fan, dropping it below the ceiling to make room for the housing (and have the intake be level)? Do you recommend I use a different fan?

    A. The Broan L300KMG can be installed as you proposed but I still would not recommend it to exhaust cooking grease as it will gum up and fail over time.
  • What are the Dimensions esp. grate?

    A. The Broan L300KMG box is 12 by 12 and the grill is 14 by 14.
  • Can I use this over an island induction cooktop?

    A. The Broan L300KMG can be installed over a cook top, provided you have the ductwork in place to ventilate it. You cannot install cooktop vents to vent directly into the attic, due to the risk of fire.
  • My kitchen is on the first floor of a 2 story home. The floor above is supported by 2x12 joists spaced at 16-in on center. The kitchen ceiling is 1/2 inch drywall nailed to the joists . The rafters are approximately 11" deep giving me a total height available of about 11.5 inches. Can I install this unit in the ceiling between the rafters, running the duct out to an exterior wall? Is any access needed on the top of the unit? The vertical dimension is listed as 11.75 in. Is this exact? It appears that I may be 1/4 inch short. Is there a way I can make this work?

    A. The Broan L300KMG would be able to be installed in this area. A 2x12 is actually 11 3/8 inch, 1/2 inch dry wall would give it just enough room. No access is needed from the top for routine maintenance.
  • can this fan be mounted on a sloped ceiling?

    A. The Broan L300KMG can be mounted on a sloped ceiling.
  • with the broan L300kmg what will i need for venting out the side of house

    A. The Broan L300KMG only needs the inline ducting and a horizontal termination cap to complete the termination.

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