U.S. Customers: Orders shipped from Canada may be subject to U.S. import duties, taxes, and/or tariffs as assessed by U.S. Customs and your carrier. These charges are not included in our product prices or shipping rates. You are responsible for any duties/tariffs/fees due on delivery or prior to delivery.
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Premium Marine Quality Parts

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Sea-Dog 3299551 Right Angle Uhf Coax Connector - 329955-1 - 354-3299551F1

Sea-Dog Line, Wiring & Connectors
$16.89

Nickel plated brass fittings for coaxial cable installation applications.

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Sea-Dog 3299701 Cap & Chain For Uhf Coax Connector - 329970-1 - 354-3299701F1

Sea-Dog Line, Wiring & Connectors
$8.99

Nickel plated brass fittings for coaxial cable installation applications.

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Sea-Dog 331200 Stainless Louvered Vent - 331200 - 354-331200F1

Sea-Dog Line, Lines & Rigging
$66.99

Corrosion resistant 316 stainless steel vents are designed to be used in conjunction with a collector box to facilitate air intake and exhaust. Installs w/six #6 RH fasteners (not included).

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Sea-Dog 331201 Stainless Recessed Louvered Vent - 331201 - 354-331201F1

Sea-Dog Line, Lines & Rigging
$66.99

Corrosion resistant 316 stainless steel. Use with a collector box to facilitate air intake and exhaust. Designed with recessed louvers to create a flush vent surface area reducing possible damage to the vent as well as preventing chafing to mooring lines, fishing lines, etc.

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Sea-Dog 331202 Collector Box - 331202 - 354-331202F1

Sea-Dog Line, Lines & Rigging
$9.89

Constructed of injection molded polypropylene these collector boxes are designed to be used in conjunction with a louvered vent to facilitate air intake and exhaust. For use with either the 331200 or 331201 stainless louvered vents or 337210, 337211, or 337212 injection molded ABS louvered vents. Interchangeable with Attwood® part number's 1341 and 1342. 331202 is available without holes to allow for custom installations.

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Sea-Dog 331203 Collector Box - 331203 - 354-331203F1

Sea-Dog Line, Lines & Rigging
$9.59

Constructed of injection molded polypropylene these collector boxes are designed to be used in conjunction with a louvered vent to facilitate air intake and exhaust. For use with either the 331200 or 331201 stainless louvered vents or 337210, 337211, or 337212 injection molded ABS louvered vents. Interchangeable with Attwood® part number's 1341 and 1342. 331203 can accept the 337600 3" collector box hose adapter.

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Sea-Dog 331204 Collector Box - 331204 - 354-331204F1

Sea-Dog Line, Lines & Rigging
$9.59

Constructed of injection molded polypropylene these collector boxes are designed to be used in conjunction with a louvered vent to facilitate air intake and exhaust. For use with either the 331200 or 331201 stainless louvered vents or 337210, 337211, or 337212 injection molded ABS louvered vents. Interchangeable with Attwood® part number's 1341 and 1342.

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Sea-Dog 331280 Stainless Louvered Vent, 10-Louver - 331280 - 354-331280F1

Sea-Dog Line, Lines & Rigging
$149.99

Stamped 316 Stainless Steel. 331280 does not have a collector box available.

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Sea-Dog 331296 Collector Box, 3" Hose, Left Mount - 331296 - 354-331296F1

Sea-Dog Line, Hoses, Clamps & Fittings
$26.36

Constructed of impact resistant vacuum formed ABS for use with a louvered vent to facilitate air intake and exhaust.

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Sea-Dog 331424 Round Louvered Vent, 4" - 331424 - 354-331424F1

Sea-Dog Line, Lines & Rigging
$8.83

Constructed of corrosion resistant stamped 304 stainless steel these round air ventilation louvers allow air in while keeping water out. Installs with four #6 FH fasteners (not included).

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Sea-Dog 3314251 Round Louvered Vent, 5" - 331425-1 - 354-3314251F1

Sea-Dog Line, Lines & Rigging
$16.18

Constructed of corrosion resistant stamped 304 stainless steel these round air ventilation louvers allow air in while keeping water out. Installs with four #6 FH fasteners (not included).

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Sea-Dog 331440 Butterfly Vent - Center Knob, 4" - 331440-1 - 354-3314401F1

Sea-Dog Line, Lines & Rigging
$23.49

Constructed of corrosion resistant 304 stainless steel these butterfly vents promote air flow to prevent mold, mildew and associated odors. Features a center knob that allows for easy adjustment of the opening.

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Sea-Dog 331455 Butterfly Vent - Side Knob, 5" - 331455 - 354-331455F1

Sea-Dog Line, Lines & Rigging
$35.59

Constructed of corrosion resistant 304 stainless steel. Promote air flow helping to preventing mold and mildew. Features a side knob that allows for easy adjustment of the opening. Fasteners sold separately.

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Sea-Dog 331600 Drain Cover, 3-1/4" - 331600-1 - 354-3316001F1

Sea-Dog Line, Lines & Rigging
$9.79

Stamped 304 StainlessVent Area 2.11 Sq. In.Fasteners: #6 RH

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Sea-Dog 3316011 Drain Cover, 2-1/2" - 331601-1 - 354-3316011F1

Sea-Dog Line, Lines & Rigging
$6.99

Stamped 304 StainlessVent Area .85 Sq. In.Fasteners: #6 RH

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Sea-Dog 3364101 Low Profile Pop-Out Deck Plate, A: 6" , B:5-1/4", C=4-1/8", D: 3/16", White, #8 Fh - 336410-1 - 354-3364101F1

Sea-Dog Line, Lines & Rigging
$36.19

Features an integrated, pop-up lever to make opening and closing a snap. The concealed fasteners give a smooth look with a very low profile (.1875"), this deck plate is great for tight places and high traffic areas. Rubber O-ring provides a watertight seal and three-tab snap provides a secure fit. Constructed of UV resistant injection molded Polypropylene for its structural strength, as well as weather and corrosion resistance. Installs with six #8 FH fasteners (not included).

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Sea-Dog 3364111 Low Profile Pop-Out Deck Plate, A: 6" , B:5-1/4", C=4-1/8", D: 3/16", Black, #8 Fh - 336411-1 - 354-3364111F1

Sea-Dog Line, Lines & Rigging
$36.19

Features an integrated, pop-up lever to make opening and closing a snap. The concealed fasteners give a smooth look with a very low profile (.1875"), this deck plate is great for tight places and high traffic areas. Rubber O-ring provides a watertight seal and three-tab snap provides a secure fit. Constructed of UV resistant injection molded Polypropylene for its structural strength, as well as weather and corrosion resistance. Installs with six #8 FH fasteners (not included).

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Sea-Dog 3364121 Low Profile Pop-Out Deck Plate, A: 8" , B:7-1/4", C=6-1/4", D: 3/16", White, #8 Fh - 336412-1 - 354-3364121F1

Sea-Dog Line, Lines & Rigging
$43.49

Features an integrated, pop-up lever to make opening and closing a snap. The concealed fasteners give a smooth look with a very low profile (.1875"), this deck plate is great for tight places and high traffic areas. Rubber O-ring provides a watertight seal and three-tab snap provides a secure fit. Constructed of UV resistant injection molded Polypropylene for its structural strength, as well as weather and corrosion resistance. Installs with six #8 FH fasteners (not included).

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Sea-Dog 3364131 Low Profile Pop-Out Deck Plate, A: 8" , B:7-1/4", C=6-1/4", D: 3/16", Black, #8 Fh - 336413-1 - 354-3364131F1

Sea-Dog Line, Lines & Rigging
$43.49

Features an integrated, pop-up lever to make opening and closing a snap. The concealed fasteners give a smooth look with a very low profile (.1875"), this deck plate is great for tight places and high traffic areas. Rubber O-ring provides a watertight seal and three-tab snap provides a secure fit. Constructed of UV resistant injection molded Polypropylene for its structural strength, as well as weather and corrosion resistance. Installs with six #8 FH fasteners (not included).

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Sea-Dog 3371401 Screw Out Deck Plate, 4" White - 337140-1 - 354-3371401F1

Sea-Dog Line, Lines & Rigging
$29.59

Sea-Dog® Screw-Out Deck Plates are molded to the highest standards using top quality UV stabilizers and antioxidants. When installing, use silicone sealant on hull or deck surface. Keep threads clean with hot soapy water. Lubricate with Vaseline or Teflon grease. Installs with six #8 FH fasteners (not included). Avoid contact with acetone or strong solvents.

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Sea-Dog 337142 Screw Out Deck Plate With Internal Collar, 4-1/2", White - 337142 - 354-337142F1

Sea-Dog Line, Lines & Rigging
$26.79

Molded with a collar on the bottom to hold deck plate bags or other round containers. Injection molded ABS. Molded to the highest standard using top quality UV stabilizers and anti-oxidants. Use silicone sealant on hull or deck when installing the deck plate.

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Sea-Dog 3371451 Screw Out Deck Plate, 4" Black - 337145-1 - 354-3371451F1

Sea-Dog Line, Lines & Rigging
$29.19

Sea-Dog® Screw-Out Deck Plates are molded to the highest standards using top quality UV stabilizers and antioxidants. When installing, use silicone sealant on hull or deck surface. Keep threads clean with hot soapy water. Lubricate with Vaseline or Teflon grease. Installs with six #8 FH fasteners (not included). Avoid contact with acetone or strong solvents.

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Sea-Dog 337146 Black Screw Out Deck Plate W/Clear Cover, 4-1/2" - 337146-1 - 354-3371461F1

Sea-Dog Line, Lines & Rigging
$30.89

The Sea-Dog® Screw-Out Deck Plate is constructed with UV stabilized injection molded ABS and feature a clear polycarbonate lid, allowing visual inspection of the watertight compartment without removing the lid. When installing, use silicone sealant on hull or deck surface. Lubricate with Vaseline or Teflon grease. Keep threads clean with hot, soapy water. Installs with six #8 FH fasteners (not included). Avoid contact with acetone or strong solvent.

Northern Marine Canada
Our products are shipped from Canada!
Parts Warehouse:
Toronto, Ontario, Canada
Head Office:
Kingston, Ontario

About Us

Northern Marine is a Canadian supplier of premium marine and RV parts and accessories from top industry brands. We focus on quality, accurate listings, and dependable fulfillment so you can maintain, repair, and outfit your boat or RV with confidence.

Our goal is simple: get you the right parts, shipped fast, with straightforward service you can count on.