McMaster-Carr logo
    Filter by
    Mounting Profile
    Frame Material
    Blade Adjustability
    Mounting Location
    Overall Depth
    Number of Panels
    Adjustability
    Frame Thickness
    Mounting Flange Thickness
    For Maximum Air Velocity
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    DFARS Specialty Metals
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    74 Products

    Adjustable-Blade Wall-Mount Louvers

    Image of Product. Front orientation. Louvers. Adjustable-Blade Wall-Mount Louvers.
    These gravity-operated louvers remain open only when air flows, preventing backdrafts.
    Surface Mount
    Image of Specification. Side1 orientation. Surface Mount.

    Surface

    Mount

    For
    Opening
    Overall
    Mounting
    Wd.
    Ht.
    Wd.
    Ht.
    Dp.
    Blade
    Thk.
    No. of
    Panels
    For Max. Air
    Velocity, fpm
    Temp. Range,
    ° F
    Fasteners
    Included
    Hole
    Dia.
    Each
    Galvanized Steel Frame and Aluminum Blades
    10 1/2"10 1/2"13"13"2 1/2"0.017"12,500-40 to 180No9/32"00000000000000
    12 1/2"12 1/2"15"15"2 1/2"0.017"12,500-40 to 180No9/32"0000000000000
    14 1/2"14 1/2"17"17"2 1/2"0.017"12,500-40 to 180No9/32"0000000000000
    16 1/2"16 1/2"19"19"2 1/2"0.017"12,500-40 to 180No9/32"0000000000000
    18 1/2"18 1/2"21"21"2 1/2"0.017"12,500-40 to 180No9/32"0000000000000
    20 1/2"20 1/2"23"23"2 1/2"0.017"12,500-40 to 180No9/32"0000000000000
    22 1/2"22 1/2"25"25"2 1/2"0.017"12,500-40 to 180No9/32"00000000000000
    24 1/2"24 1/2"27"27"3"0.017"12,500-40 to 180No9/32"00000000000000
    24 1/2"36 1/2"27"39"3"0.017"12,500-40 to 180No9/32"00000000000000
    26 1/2"26 1/2"29"29"3"0.017"12,500-40 to 180No9/32"00000000000000
    28 1/2"28 1/2"31"31"3"0.017"12,500-40 to 180No9/32"00000000000000
    30 1/2"30 1/2"33"33"3"0.017"12,500-40 to 180No9/32"00000000000000
    32 1/2"32 1/2"35"35"3"0.017"12,500-40 to 180No9/32"00000000000000
    34 1/2"34 1/2"37"37"3"0.017"12,500-40 to 180No9/32"00000000000000
    36 1/2"36 1/2"39"39"3"0.017"12,500-40 to 180No9/32"00000000000000
    38 1/2"38 1/2"41"41"3"0.017"22,500-40 to 180No9/32"00000000000000
    40 1/2"40 1/2"43"43"3"0.017"22,500-40 to 180No9/32"00000000000000
    42 1/2"42 1/2"45"45"3"0.017"22,500-40 to 180No9/32"00000000000000
    44 1/2"44 1/2"47"47"3"0.017"22,500-40 to 180No9/32"00000000000000
    48 1/2"48 1/2"51"51"3"0.017"22,500-40 to 180No9/32"00000000000000
    50 1/2"50 1/2"53"53"3"0.017"22,500-40 to 180No9/32"00000000000000
    54 1/2"54 1/2"57"57"3"0.017"22,500-40 to 180No9/32"00000000000000
    56 1/2"56 1/2"59"59"3"0.017"22,500-40 to 180No9/32"00000000000000
    60 1/2"60 1/2"63"63"3"0.017"22,500-40 to 180No9/32"00000000000000
     
    Motor Kits for Louvers with Galvanized Steel Frames
    Image of Product. Front orientation. Louver Motors.
    Motor kits for louvers let you open louvers when you’re not running your exhaust fan but still want to let air flow into your ventilation system.
    Overall
    For Opening Wd.
    Includes
    Voltage, V AC
    Electrical
    Phase
    Lg.
    Wd.
    Ht.
    Mounting Fasteners
    Included
    Each
    10 1/2" to 36 1/2"Motor, Motor-to-Louver Arm, Mounting Bracket120/240Single4 1/4"5"7"Yes000000000000000
    38 1/2" to 50 1/2"Motor, Motor-to-Louver Arm, Mounting Bracket120/240Single6"5"6"Yes00000000000000
    54 1/2" to 60 1/2"Motor, Motor-to-Louver Arm, Mounting Bracket100 to 240Single6"4"6 1/2"Yes00000000000000

    Roof-Mount Louvers

    These louvers are gravity operated. The blades open when your roof-mounted exhaust fan goes on and close when it's off, preventing backdrafts. The felt seal on the face of the blades ensures quiet closing and better protection from the weather.
    Also Available: Additional louver sizes. Please select 8061T999 and specify louver dimensions.
    Surface Mount
    Image of Product. Front orientation. Louvers. Roof-Mount Louvers.
    Image of Specification. Side1 orientation. Surface Mount.
    Image of Product. Front orientation. Exhaust Fan Mounts.
    Image of Attribute. Front orientation. CrossSection view. Contains Annotated.

    Surface

    Mount

    Exhaust Fan Mounts

    Exhaust Fan Mounts—Exhaust fan mounts are sold separately. Louvers fit the bottom of the mount and must be secured to the lip of the mount's base with sheet metal screws (not included).
    Louvers
    8" High Exhaust
    Fan Mounts
    12" High Exhaust
    Fan Mounts
    For
    Opening
    Overall
    Wd.
    Ht.
    Wd.
    Lg.
    Blade
    Thk.
    No. of
    Panels
    For Max. Air
    Velocity, fpm
    Temp. Range,
    ° F
    Mounting Fasteners
    Included
    Each
    Inside
    Wd.
    Each
    Inside
    Wd.
    Each
    Galvanized Steel Frame and Aluminum Blades
    13 3/4"13 3/4"13 3/4"13 3/4"0.016"12,000-40 to 180No00000000000014 1/2"0000000000000014 1/2"00000000000000
    15 3/4"15 3/4"15 3/4"15 3/4"0.016"12,000-40 to 180No0000000000016 1/2"000000000000016 1/2"0000000000000
    17 3/4"17 3/4"17 3/4"17 3/4"0.016"12,000-40 to 180No00000000000————019 1/2"0000000000000
    19 3/4"19 3/4"19 3/4"19 3/4"0.016"12,000-40 to 180No00000000000021 1/2"0000000000000————0
    21 3/4"21 3/4"21 3/4"21 3/4"0.016"12,000-40 to 180No000000000000————023 1/2"0000000000000
    23 3/4"23 3/4"23 3/4"23 3/4"0.016"12,000-40 to 180No000000000000————025 1/2"0000000000000
    27 3/4"27 3/4"27 3/4"27 3/4"0.016"12,000-40 to 180No0000000000000————028 1/2"0000000000000
    34 3/4"34 3/4"34 3/4"34 3/4"0.016"12,000-40 to 180No000000000000035 1/2"000000000000035 1/2"0000000000000
    36 3/4"36 3/4"36 3/4"36 3/4"0.016"12,000-40 to 180No0000000000000————037 1/2"0000000000000
     
    Motor Kits for Louvers with Galvanized Steel Frames
    Image of Product. Front orientation. Louver Motors.
    Motor kits for louvers let you open louvers when you’re not running your exhaust fan but still want to let air flow into your ventilation system.
    Overall
    Includes
    Voltage, V AC
    Electrical
    Phase
    Lg.
    Wd.
    Ht.
    Mounting Fasteners
    Included
    Each
    Motor, Motor-to-Louver Arm, Mounting Bracket120/240Single7 3/8"4 1/2"8 1/2"Yes000000000000000

    Weather-Resistant Louvers for Enclosures

    With a gasketed sealing kit, these louvers shield your enclosure from dirt, moisture, and weather while regulating heat and stopping condensation from forming inside. All have an aluminum mesh filter that keeps out solid debris and water.
    1 Panel
    Image of Product. Front orientation. Louvers. Weather-Resistant Louvers for Enclosures, 1 Panel.
    Image of Specification. Side1 orientation. Surface Mount.
    Image of Product. Front orientation. Louver Filters. Weather-Resistant Louvers for Enclosures.

    Surface

    Mount

    Replacement Louver Filters

    Stainless Steel Frame and Blades—Stainless steel louvers stand up to corrosion better than powder-coated steel louvers.
    Louvers
    Replacement
    Louver Filters
    For
    Opening
    Overall
    Mounting
    Wd.
    Ht.
    Wd.
    Ht.
    Blade
    Thk.
    Profile
    Fasteners
    Included
    Hole
    Dia.
    For Use
    Outdoors
    Enclosure
    Rating
    Certification
    Includes
    Each
    Each
    Gray Powder-Coated Steel Frame and Blades
    2 3/4"3"5 5/16"5 9/16"0.07"SurfaceYes1/4"YesNEMA 3R
    		CSA Certified, UL Recognized Component
    		One Aluminum Mesh Filter, Two Mounting Brackets000000000000000000000000000
    3 3/4"2 7/8"6 5/16"5 5/16"0.07"SurfaceYes1/4"YesNEMA 3R
    		CSA Certified, UL Recognized Component
    		One Aluminum Mesh Filter, Two Mounting Brackets0000000000000000000000000
    3 3/4"4"6 5/16"6 3/8"0.07"SurfaceYes1/4"YesNEMA 3R
    		CSA Certified, UL Recognized Component
    		One Aluminum Mesh Filter, Two Mounting Brackets0000000000000000000000000
     
    Stainless Steel Frame and Blades
    2 3/4"3"5 5/16"5 9/16"0.07"SurfaceYes1/4"YesNEMA 3R
    		CSA Certified, UL Recognized Component
    		One Aluminum Mesh Filter, Two Mounting Brackets00000000000000000000000000
    3 3/4"2 7/8"6 5/16"5 5/16"0.07"SurfaceYes1/4"YesNEMA 3R
    		CSA Certified, UL Recognized Component
    		One Aluminum Mesh Filter, Two Mounting Brackets00000000000000000000000000
    3 3/4"4"6 5/16"6 3/8"0.07"SurfaceYes1/4"YesNEMA 3R
    		CSA Certified, UL Recognized Component
    		One Aluminum Mesh Filter, Two Mounting Brackets00000000000000000000000000
     
    2 Panels
    Image of Product. Front orientation. Louvers. Weather-Resistant Louvers for Enclosures, 2 Panels.
    Image of Specification. Side1 orientation. Surface Mount.
    Image of Product. Front orientation. Louver Filters. Weather-Resistant Louvers for Enclosures.

    Surface

    Mount

    Replacement Louver Filters

    Louvers
    Replacement
    Louver Filters
    For
    Opening
    Overall
    Mounting
    Wd.
    Ht.
    Wd.
    Ht.
    Blade
    Thk.
    Profile
    Fasteners
    Included
    Hole
    Dia.
    For Use
    Outdoors
    Enclosure
    Rating
    Certification
    Includes
    Each
    Each
    Gray Powder-Coated Steel Frame and Blades
    5 3/4"3 1/2"8 5/16"6 3/8"0.07"SurfaceYes1/4"YesNEMA 3R
    		CSA Certified, UL Recognized Component
    		One Aluminum Mesh Filter, Two Mounting Brackets000000000000000000000000000
    5 3/4"5 3/4"8 5/16"8 11/16"0.07"SurfaceYes1/4"YesNEMA 3R
    		CSA Certified, UL Recognized Component
    		One Aluminum Mesh Filter, Two Mounting Brackets0000000000000000000000000
    7 3/4"3 3/4"10 5/16"6 5/8"0.07"SurfaceYes1/4"YesNEMA 3R
    		CSA Certified, UL Recognized Component
    		One Aluminum Mesh Filter, Two Mounting Brackets0000000000000000000000000
    7 3/4"6 1/4"10 5/16"9"0.07"SurfaceYes1/4"YesNEMA 3R
    		CSA Certified, UL Recognized Component
    		One Aluminum Mesh Filter, Two Mounting Brackets0000000000000000000000000
    7 3/4"8 1/2"10 5/16"11 3/8"0.07"SurfaceYes1/4"YesNEMA 3R
    		CSA Certified, UL Recognized Component
    		One Aluminum Mesh Filter, Two Mounting Brackets0000000000000000000000000
    7 3/4"13 1/4"10 5/16"16 1/8"0.07"SurfaceYes1/4"YesNEMA 3R
    		CSA Certified, UL Recognized Component
    		One Aluminum Mesh Filter, Two Mounting Brackets0000000000000000000000000
     

    Fixed-Blade Wall-Mount Louvers with Adjustable Register and Aluminum Filter

    Image of Product. Front orientation. Exploded view. Louvers. Fixed-Blade Wall-Mount Louvers with Adjustable Register and Aluminum Filter.
    The included filter cleans the air as it passes through these louvers. They mount through an outside wall and control airflow from the inside by adjusting the register.
    Recessed Mount
    Image of Specification. Side1 orientation. Recessed Mount.

    Recessed

    Mount

    Louvers
    Replacement
    Louver Filters
    For
    Opening
    Overall
    Mounting
    Wd.
    Ht.
    Wd.
    Ht.
    Dp.
    Blade
    Thk.
    No. of
    Panels
    Includes
    Fasteners
    Included
    Hole
    Dia.
    Each
    Each
    White Powder-Coated Steel Frame and Blades
    14"10"17"13"2 1/2"0.036"1Insect Screen, Washable Aluminum FilterNo1/8"00000000000000000000000000
    20"14"23"17"2 1/2"0.036"1Insect Screen, Washable Aluminum FilterNo1/8"000000000000000000000000
     
    back to top