Boat Vents

Vents
  • T-H Marine® - 1-5/8" L x 1-1/2" W x 7/16" H Black Plastic Clam Shell Vent
    T-H Marine®1-5/8" L x 1-1/2" W x 7/16" H Black Plastic Clam Shell Vent (CSS-1-DP)
    0
    # mpn4478382645
    1-5/8" L x 1-1/2" W x 7/16" H Black Plastic Clam Shell Vent (CSS-1-DP) by T-H Marine®. These super-strong clam shells are an economical and attractive alternative for metal clam shells. These clam shells are great for routing cables or...
    Built for maximum strength and enduranceExpertly crafted from the highest grade materials
    $6.67
  • T-H Marine® - 2" L x 2" W x 9/16" H Black Plastic Clam Shell Vent
    T-H Marine®2" L x 2" W x 9/16" H Black Plastic Clam Shell Vent (CS-1-DP)
    0
    # mpn4478382678
    2" L x 2" W x 9/16" H Black Plastic Clam Shell Vent (CS-1-DP) by T-H Marine®. These super-strong clam shells are an economical and attractive alternative for metal clam shells. These clam shells are great for routing cables or wires...
    Built for maximum strength and enduranceExpertly crafted from the highest grade materials
    $8.20
  • T-H Marine® - 2" L x 2" W x 9/16" H White Plastic Clam Shell Vent
    T-H Marine®2" L x 2" W x 9/16" H White Plastic Clam Shell Vent (CS-2-DP)
    0
    # mpn4478382643
    2" L x 2" W x 9/16" H White Plastic Clam Shell Vent (CS-2-DP) by T-H Marine®. These super-strong clam shells are an economical and attractive alternative for metal clam shells. These clam shells are great for routing cables or wires...
    Built for maximum strength and enduranceExpertly crafted from the highest grade materials
    $11.81
  • Sea Dog® - 1-5/8" L x 1-3/4" W x 1/2" H Stainless Steel Clam Shell Vent
    Sea Dog®1-5/8" L x 1-3/4" W x 1/2" H Stainless Steel Clam Shell Vent (331360-1)
    0
    # mpn4479320322
    1-5/8" L x 1-3/4" W x 1/2" H Stainless Steel Clam Shell Vent by Sea Dog®. These Midget Vents provide a splash proof opening through transoms, cabin sides, etc. Great for routing cables and wires or for covering thru-hull openings to...
    Built for maximum strength and enduranceExpertly crafted from the highest grade materials
    $3.16
  • Sea Dog® - 2-1/4" L x 2-1/8" W x 5/8" H Stainless Steel Clam Shell Vent
    Sea Dog®2-1/4" L x 2-1/8" W x 5/8" H Stainless Steel Clam Shell Vent (331370-1)
    0
    # mpn4479319627
    2-1/4" L x 2-1/8" W x 5/8" H Stainless Steel Clam Shell Vent by Sea Dog®. These Midget Vents provide a splash proof opening through transoms, cabin sides, etc. Great for routing cables and wires or for covering thru-hull openings to...
    Built for maximum strength and enduranceExpertly crafted from the highest grade materials
    $3.53
  • Sea Dog® - 2-3/4" D White Plastic Flush Thru Vent
    Sea Dog®2-3/4" D White Plastic Flush Thru Vent (337316-1)
    0
    # mpn1589915253
    2-3/4" D White Plastic Flush Thru Vent (337316-1) by Sea Dog®. These Flush Thru Vent is designed for cabin or bilge ventilation. This product is made of high-quality materials to serve you for years to come. Designed using...
    Built for maximum strength and enduranceExpertly crafted from the highest grade materials
    $4.13
  • Sea Dog® - 3" D x 4-1/4" H White Plastic Low Profile Snap-On Cowl Vent
    Sea Dog®3" D x 4-1/4" H White Plastic Low Profile Snap-On Cowl Vent (727132-3)
    0
    # mpn4479320631
    3" D x 4-1/4" H White Plastic Low Profile Snap-On Cowl Vent (727132-3) by Sea Dog®. Low Profile Cowl Vents are designed for air intake or cabin ventilation when used in conjunction with a dorade box. Great for bilge ventilation with or...
    Built for maximum strength and enduranceExpertly crafted from the highest grade materials
    $31.02
  • Sea Dog® - 3" D x 4-1/4" H White/Red Plastic Low Profile Snap-On Cowl Vent
    Sea Dog®3" D x 4-1/4" H White/Red Plastic Low Profile Snap-On Cowl Vent (727130-3)
    0
    # mpn4479320046
    3" D x 4-1/4" H White/Red Plastic Low Profile Snap-On Cowl Vent (727130-3) by Sea Dog®. Low Profile Cowl Vents are designed for air intake or cabin ventilation when used in conjunction with a dorade box. Great for bilge ventilation with...
    Built for maximum strength and enduranceExpertly crafted from the highest grade materials
    $32.47
  • Sea Dog® - 3-3/4" L x 3-1/2" W x 15/16" H Stainless Steel Heavy Duty Clam Shell Vent
    Sea Dog®3-3/4" L x 3-1/2" W x 15/16" H Stainless Steel Heavy Duty Clam Shell Vent (331375-1)
    0
    # mpn1579804774
    3-3/4" L x 3-1/2" W x 15/16" H Stainless Steel Heavy Duty Clam Shell Vent by Sea Dog®. This Heavy Duty Midget Vent features a reinforced rim, making them durable enough to stand on. Great for routing cables or wires through a hole or...
    Built for maximum strength and enduranceExpertly crafted from the highest grade materials
    $10.54
  • Sea Dog® - 5" D Dark Gray Nylon Mushroom Vent
    Sea Dog®5" D Dark Gray Nylon Mushroom Vent (727525-3)
    0
    # mpn4684523376
    5" D Dark Gray Nylon Mushroom Vent (727525-3) by Sea Dog®. These vents provide passive ventilation for your cabin by reducing stagnant air, mold and mildew without opening a hatch. Fully adjustable with a manual knob. Translucent center...
    Built for maximum strength and enduranceExpertly crafted from the highest grade materials
    $43.44
  • Sea Dog® - 5" D Stainless Steel Round 5 Slot Louver Vent
    Sea Dog®5" D Stainless Steel Round 5 Slot Louver Vent (331425-1)
    0
    # mpn4479320742
    5" D Stainless Steel Round 5 Slot Louver Vent by Sea Dog®. These Round Louvered Vents allow air in while keeping water out. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art...
    Built for maximum strength and enduranceExpertly crafted from the highest grade materials
    $11.66
  • Sea Dog® - 5" L x 4-1/2" W x 2" H Stainless Steel Clam Shell Vent, Display
    Sea Dog®5" L x 4-1/2" W x 2" H Stainless Steel Clam Shell Vent, Display (331335-1)
    0
    # mpn1579804763
    5" L x 4-1/2" W x 2" H Stainless Steel Clam Shell Vent , Display by Sea Dog®. This Mini Clam Shell Vent provides splash protection for vent holes, wire and cable runs, or blower-exhaust hose openings. Can be used for cabin ventilation...
    Built for maximum strength and enduranceExpertly crafted from the highest grade materials
    $31.22
  • Sea Dog® - 6-3/4" L x 2-3/8" W Stainless Steel Oval Locker Vent
    Sea Dog®6-3/4" L x 2-3/8" W Stainless Steel Oval Locker Vent (331620-1)
    0
    # mpn4479319969
    6-3/4" L x 2-3/8" W Stainless Steel Oval Locker Vent by Sea Dog®. This Locker Vent is designed to promote air circulation in interior areas and prevent mold, mildew, and unpleasant odors. This product is made of high-quality materials...
    Built for maximum strength and enduranceExpertly crafted from the highest grade materials
    $10.76
  • Sea Dog® - 7" L x 5-3/4" W x 2-1/4" H Stainless Steel Clam Shell Vent, Display
    Sea Dog®7" L x 5-3/4" W x 2-1/4" H Stainless Steel Clam Shell Vent, Display (331340-1)
    0
    # mpn4648863235
    7" L x 5-3/4" W x 2-1/4" H Stainless Steel Clam Shell Vent , Display by Sea Dog®. This Clam Shell Vent provides splash protection for vent holes, wire/cable runs, or blower-exhaust hose openings. Can be used for cabin ventilation with...
    Built for maximum strength and enduranceExpertly crafted from the highest grade materials
    $48.67
  • Sea Dog® - 7-1/2" L x 6-3/4" W x 2-7/8" H Stainless Steel Clam Shell Vent, Display
    Sea Dog®7-1/2" L x 6-3/4" W x 2-7/8" H Stainless Steel Clam Shell Vent, Display (331350-1)
    0
    # mpn1579804775
    7-1/2" L x 6-3/4" W x 2-7/8" H Stainless Steel Clam Shell Vent , Display by Sea Dog®. This Clam Shell Vent provides splash protection for vent holes, wire/cable runs, or blower-exhaust hose openings. Can be used for cabin ventilation...
    Built for maximum strength and enduranceExpertly crafted from the highest grade materials
    $50.33
  • Sea Dog® - 9-1/8" L x 4-5/8" W Stainless Steel Oval 7 Slot Louver Vent, Bulk
    Sea Dog®9-1/8" L x 4-5/8" W Stainless Steel Oval 7 Slot Louver Vent, Bulk (331405)
    0
    # mpn1437100694
    9-1/8" L x 4-5/8" W Stainless Steel Oval 7 Slot Louver Vent , Bulk (331405) by Sea Dog®. This Oval Louvered Vent is designed to promote air circulation and prevent mold, mildew, and unpleasant odors. Ideal for cabin doors, lockers, dock...
    Built for maximum strength and enduranceExpertly crafted from the highest grade materials
    $22.47
  • T-H Marine® - 4" D Black Plastic Round Louver Vent
    T-H Marine®4" D Black Plastic Round Louver Vent (LV-1-DP)
    0
    # mpn4478382355
    4" D Black Plastic Round Louver Vent (LV-1-DP) by T-H Marine®. Attractive vent cover designed with louvers to eliminate see-thru look and deflect rain. Designed with a flange molded into part so raw edges of cut are hidden and protected.
    Built for maximum strength and enduranceExpertly crafted from the highest grade materials
    $7.07
  • T-H Marine® - 4" D Fish White Plastic Round Louver Vent
    T-H Marine®4" D Fish White Plastic Round Louver Vent (LV-1FW-DP)
    0
    # mpn4691286910
    4" D Fish White Plastic Round Louver Vent (LV-1FW-DP) by T-H Marine®. Attractive vent cover designed with louvers to eliminate see-thru look and deflect rain. Designed with a flange molded into part so raw edges of cut are hidden and...
    Built for maximum strength and enduranceExpertly crafted from the highest grade materials
    $6.04
  • Attwood® - 10-3/8" L x 3-1/4" W Stainless Steel 5 Slot Louver
    Attwood®10-3/8" L x 3-1/4" W Stainless Steel 5 Slot Louver (1488-5)
    0
    # mpn4494751464
    10-3/8" L x 3-1/4" W Stainless Steel 5 Slot Louver by Attwood®. Attwood hull-mounted vents are designed to install by fastening as a complete unit from either inside or outside the hull. Ventilation hose (not included) twists into the...
    Built for maximum strength and enduranceExpertly crafted from the highest grade materials
    $42.69
  • Attwood® - 15-1/4" L x 2" W Black Plastic Flush Louver
    Attwood®15-1/4" L x 2" W Black Plastic Flush Louver (1423-5)
    0
    # mpn4494751436
    15-1/4" L x 2" W Black Plastic Flush Louver (1423-5) by Attwood®. Attwood hull-mounted vents are designed to install by fastening as a complete unit from either inside or outside the hull. Ventilation hose (not included) twists into the...
    Canted louvers deflect rain and spray and help conceal the collector boxInstalls flush to hull
    $16.00
  • Attwood® - 15-1/4" L x 2" W Black Plastic Rectangular Flush Louver Vent, Bulk
    Attwood®15-1/4" L x 2" W Black Plastic Rectangular Flush Louver Vent, Bulk (1423-1)
    0
    # mpn4978952927
    15-1/4" L x 2" W Black Plastic Rectangular Flush Louver Vent , Bulk (1423-1) by Attwood®. Attwood hull-mounted vents are designed to install by fastening as a complete unit from either inside or outside the hull. Ventilation hose (not...
    Canted louvers deflect rain and spray and help conceal the collector boxInstalls flush to hull
    $4.74
  • Attwood® - 15-1/4" L x 2" W White Plastic Flush Louver
    Attwood®15-1/4" L x 2" W White Plastic Flush Louver (1425-5)
    0
    # mpn4494751435
    15-1/4" L x 2" W White Plastic Flush Louver (1425-5) by Attwood®. Attwood hull-mounted vents are designed to install by fastening as a complete unit from either inside or outside the hull. Ventilation hose (not included) twists into the...
    Canted louvers deflect rain and spray and help conceal the collector boxInstalls flush to hull
    $18.45
  • Attwood® - 15-3/8" L x 2" W Black Plastic Venturi Vent
    Attwood®15-3/8" L x 2" W Black Plastic Venturi Vent (1494A5)
    0
    # mpn1438140024
    15-3/8" L x 2" W Black Plastic Venturi Vent (1494A5) by Attwood®. Attwood hull-mounted vents are designed to install by fastening as a complete unit from either inside or outside the hull. Ventilation hose (not included) twists into the...
    Clean, contemporary, louver designCorrosion-resistant ABS plastic
    $27.30
  • Attwood® - 15-3/8" L x 2" W White Plastic Venturi Vent
    Attwood®15-3/8" L x 2" W White Plastic Venturi Vent (1494F1)
    0
    # mpn1438140023
    15-3/8" L x 2" W White Plastic Venturi Vent (1494F1) by Attwood®. Attwood hull-mounted vents are designed to install by fastening as a complete unit from either inside or outside the hull. Ventilation hose (not included) twists into the...
    Clean, contemporary, louver designCorrosion-resistant ABS plastic
    $14.61
  • Attwood® - 15-9/16" L x 3-7/8" W x 2-1/16" H Plastic Collector Box for Two 3" Hoses
    Attwood®15-9/16" L x 3-7/8" W x 2-1/16" H Plastic Collector Box for Two 3" Hoses (1341-1)
    0
    # mpn4494751475
    15-9/16" L x 3-7/8" W x 2-1/16" H Plastic Collector Box for Two 3" Hoses (1341-1) by Attwood®. Attwood hull-mounted vents are designed to install by fastening as a complete unit from either inside or outside the hull. Ventilation hose...
    Built for maximum strength and enduranceExpertly crafted from the highest grade materials
    $13.06
  • Attwood® - 16" L x 2-1/4" W White Plastic Louver
    Attwood®16" L x 2-1/4" W White Plastic Louver (1495-1)
    0
    # mpn4494751442
    16" L x 2-1/4" W White Plastic Louver (1495-1) by Attwood®. Attwood hull-mounted vents are designed to install by fastening as a complete unit from either inside or outside the hull. Ventilation hose (not included) twists into the...
    Built for maximum strength and enduranceExpertly crafted from the highest grade materials
    $15.82
  • Attwood® - 16-1/4" L x 4" W x 2-7/16" H Plastic Collector Box for Two 3" Hoses
    Attwood®16-1/4" L x 4" W x 2-7/16" H Plastic Collector Box for Two 3" Hoses (1345-1)
    0
    # mpn4494751494
    16-1/4" L x 4" W x 2-7/16" H Plastic Collector Box for Two 3" Hoses (1345-1) by Attwood®. Attwood hull-mounted vents are designed to install by fastening as a complete unit from either inside or outside the hull. Ventilation hose (not...
    Built for maximum strength and enduranceExpertly crafted from the highest grade materials
    $15.28
  • Attwood® - 17-3/4" L x 2-1/2" W White Center Section Louver
    Attwood®17-3/4" L x 2-1/2" W White Center Section Louver (1438F1)
    2
    # mpn4749905127
    17-3/4" L x 2-1/2" W White Center Section Louver (1438F1) by Attwood®. Attwood hull-mounted vents are designed to install by fastening as a complete unit from either inside or outside the hull. Ventilation hose (not included) twists...
    Built for maximum strength and enduranceExpertly crafted from the highest grade materials
    $29.18
  • Attwood® - 17-3/4" L x 2-1/2" W White End Section Louver
    Attwood®17-3/4" L x 2-1/2" W White End Section Louver (1439F1)
    0
    # mpn4749905124
    17-3/4" L x 2-1/2" W White End Section Louver (1439F1) by Attwood®. Attwood hull-mounted vents are designed to install by fastening as a complete unit from either inside or outside the hull. Ventilation hose (not included) twists into...
    Built for maximum strength and enduranceExpertly crafted from the highest grade materials
    $9.99
  • Attwood® - 3" Dia. Chrome Plated Zamak Cowl Vent
    Attwood®3" Dia. Chrome Plated Zamak Cowl Vent (1364A3)
    0
    # mpn1438140015
    3" Dia. Chrome Plated Zamak Cowl Vent by Attwood®. Attwood hull-mounted vents are designed to install by fastening as a complete unit from either inside or outside the hull. Ventilation hose (not included) twists into the bottom of the...
    Built for maximum strength and enduranceExpertly crafted from the highest grade materials
    $34.23




Good ventilation aboard provides a number of benefits to both the crew and passengers. It provides a source of fresh air in any weather conditions, helps to prevent bad odors and mildew, and can even save somebody's life by removing carbon monoxide in the case of an emergency. If a non-open vessel is outfitted with a gasoline inboard motor, the ventilation system having a blower is a legal requirement. Commonly, the vent layout includes special channels (ducts) that have openings known as air inlets and outlets. Typically, these openings have different kinds of plastic or metal vents available in various shapes and designs.

There are louver, cowl, mushroom, and other types of vents that can be installed on the deck, walls, or other constructions. The square of vent holes and their location have to meet specific requirements. For instance, air outlets should be installed above any possible bilge water level. In our online store, you will find a large assortment of boat vents offered in different kinds and sizes. They are made from high-quality plastic, stainless steel, brass, or other materials and feature appealing finishes, so you will certainly find the products that suit your project best.

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