Marine Plumbing & Ventilation - Thru-Hull Fittings

104 products

50% Off

Perko 312 x 212 Scoop Strainer Bronze MADE IN THE USA 0066DP1PLB

$17.99

~~$35.86~~

Perko 3-1/2" X 2-1/2" Scoop Strainer BronzeCast bronzeMachine slotsTechnical Information: For Thru-Hull Size Inches: 3/8 & 1/2 Dimensions Strainer Inches: 3-1/2 x 2-1/2 Model Number: 0066DP1...

17% Off

TM Marine 90Degree Cockpit Scupper Drain White CSD92DP

$63.99

~~$76.99~~

90-Degree Cockpit Scupper Drain - WhiteThis cockpit scupper drain is an affordable and durable solution for draining areas below the waterline. Made from high-strength, UV-stabilized polymer, it f...

36% Off

GROCO 112 Slotted Hi Speed ThruHull wNut HSSLTH1500W

$95.99

~~$149.00~~

1-1/2" Slotted Hi Speed Thru-Hull with NutFeatures: 1-1/2" NPSM / NPT combination thread C83600 Bronze With Nut Slotted Specifications: Hose Size: 1-1/2" Material: Bronze Box Dimensions: 3"H x 3"...

36% Off

GROCO 114 Slotted Hi Speed ThruHull wNut HSSLTH1250W

$74.99

~~$117.00~~

1-1/4" Slotted Hi Speed Thru-Hull with NutFeatures: 1-1/4" NPSM / NPT combination thread C83600 Bronze With Nut Slotted Specifications: Hose Size: 1-1/4" Material: Bronze Box Dimensions: 3"H x 3"...

34% Off

GROCO 34 Slotted Hi Speed ThruHull wNut HSSLTH750W

$30.99

~~$47.00~~

3/4" Slotted Hi Speed Thru-Hull with NutFeatures: 3/4" NPSM / NPT combination thread C83600 Bronze With Nut Slotted Specifications: Hose Size: 3/4" Material: Bronze Box Dimensions: 3"H x 3"W x 4"...

92% Off

Forespar Pro Series Valve Stainless Steel Capped ThruHull Fits 1122 930003SS

$15.99

~~$196.95~~

Pro Series Valve Stainless Steel Capped Thru-Hull Fits 1-1/2"-2"Thru-hull only for small Pro Series valves; mushroom head, buttress thread Specifications: Hose Size: 2" Material: Plastic Box Dimen...

22% Off

Forespar Pro Series Valve Stainless Steel Capped ThruHull Fits 1114 930002SS

$13.99

~~$17.95~~

Pro Series Valve Stainless Steel Capped Thru-Hull Fits 1"-1-1/4"Thru-hull only for small Pro Series valves; mushroom head, buttress thread Specifications: Hose Size: 1-1/4" Material: Plastic Box D...

40% Off

Forespar Pro Series Valve Stainless Steel Capped ThruHull Fits 1234 930001SS

$11.99

~~$19.99~~

Pro Series Valve Stainless Steel Capped Thru-Hull Fits 1/2"-3/4"Thru-hull only for small Pro Series valves; mushroom head, buttress thread Specifications: Hose Size: 3/4" Material: Plastic Box Dim...

36% Off

GROCO 3 Bronze ThruHull Fitting wNut TH3000W

$233.99

~~$365.00~~

3" Bronze Thru-Hull Fitting with NutHigher flow rates are possible with this 3" GROCO thru-hull fitting than conventional thru-hulls.Features: NPSM / NPT combination thread C83600 Bronze UL listed...

36% Off

GROCO 212 Bronze ThruHull Fitting wNut TH2500W

$162.99

~~$254.00~~

2-1/2" Bronze Thru-Hull Fitting with NutHigher flow rates are possible with this 2-1/2" GROCO thru-hull fitting than conventional thru-hulls.Features: NPSM / NPT combination thread C83600 Bronze U...

23% Off

Attwood Stainless Steel ThruHull Short Straight Barbed 34 Inner Diameter 665413

$22.99

~~$29.74~~

Stainless Steel Thru-Hull Short Straight Barbed - 3/4" Inner DiameterPolish your image with these beautiful, durable stainless steel fittings. Why specify plastic parts when these fittings will la...

23% Off

Attwood Stainless Steel ThruHull Short Straight Barbed 1 Inner Diameter 665423

$26.99

~~$35.16~~

Stainless Steel Thru-Hull Short Straight Barbed - 1" Inner DiameterPolish your image with these beautiful, durable stainless steel fittings. Why specify plastic parts when these fittings will last...

21% Off

Attwood Stainless Steel ThruHull Standard Straight Barbed 34 Inner Diameter 665473

$23.99

~~$30.39~~

Stainless Steel Thru-Hull Standard Straight Barbed - 3/4" Inner DiameterPolish your image with these beautiful, durable stainless steel fittings. Why specify plastic parts when these fittings will...

25% Off

Attwood Stainless Steel Scupper Valve Barbed 112 Hose Size 665533

$76.99

~~$102.83~~

Stainless Steel Scupper Valve Barbed - 1-1/2" Hose SizePolish your image with these beautiful, durable stainless steel fittings. Why specify plastic parts when these fittings will last the life of...

24% Off

Attwood Stainless Steel ThruHull Standard Straight Barbed 1 Inner Diameter 665483

$26.99

~~$35.42~~

Stainless Steel Thru-Hull Standard Straight Barbed - 1" Inner DiameterPolish your image with these beautiful, durable stainless steel fittings. Why specify plastic parts when these fittings will l...

24% Off

Attwood Stainless Steel ThruHull Standard Straight Barbed 112 Inner Diameter 665513

$46.99

~~$61.56~~

Stainless Steel Thru-Hull Standard Straight Barbed - 1-1/2" Inner DiameterPolish your image with these beautiful, durable stainless steel fittings. Why specify plastic parts when these fittings wi...

24% Off

Attwood Stainless Steel ThruHull Standard Straight Barbed 118 Inner Diameter 665493

$31.99

~~$42.28~~

Stainless Steel Thru-Hull Standard Straight Barbed - 1-1/8" Inner DiameterPolish your image with these beautiful, durable stainless steel fittings. Why specify plastic parts when these fittings wi...

20% Off

Attwood White Plastic 90 Degree ThruHull Connector 118 Inner Diameter 38793

$12.99

~~$16.19~~

White Plastic 90 Degree Thru-Hull Connector - 1-1/8" Inner Diameter90° Thru-Hulls are ideal for tight installations, such as livewell overflow drains. The angled design also eliminates hose kinkin...

20% Off

Attwood White Plastic 90 Degree ThruHull Connector 34 Inner Diameter 38773

$7.99

~~$9.99~~

White Plastic 90 Degree Thru-Hull Connector - 3/4" Inner Diameter90° Thru-Hulls are ideal for tight installations, such as livewell overflow drains. The angled design also eliminates hose kinking....

18% Off

Attwood Stainless Steel ThruHull Standard Straight Barbed 58 Inner Diameter 665463

$22.99

~~$27.99~~

Stainless Steel Thru-Hull Standard Straight Barbed - 5/8" Inner DiameterPolish your image with these beautiful, durable stainless steel fittings. Why specify plastic parts when these fittings will...

23% Off

Attwood Stainless Steel ThruHull Short Straight Barbed 112 Inner Diameter 665453

$47.99

~~$61.99~~

Stainless Steel Thru-Hull Short Straight Barbed - 1-1/2" Inner Diameter Polish your image with these beautiful, durable stainless steel fittings. Why specify plastic parts when these fittings will...

35% Off

GROCO 34 90 Degree Hose ThruHull Fitting HTHC750S

$38.99

~~$60.00~~

3/4" 90 Degree Hose Thru-Hull Fitting Features: 90 Degree Barb #316 Stainless Steel Thru Hull with Bronze Hose Connection UL Listed 647B Specifications: Material: Stainless Steel Hose Size: 3/4" ...

34% Off

GROCO 1 Bronze High Speed ThruHull Fitting wNut HSTH1000W

$26.99

~~$41.00~~

1" Bronze High Speed Thru-Hull Fitting w/Nut Features: Designed for increased flow compared to standard Thru Hulls and with less drag NPSM / NPT combination thread C83600 Bronze Specifications: H...

36% Off

GROCO 112 Bronze High Speed ThruHull Fitting wNut HSTH1500W

$68.99

~~$108.00~~

1-1/2" Bronze High Speed Thru-Hull Fitting w/Nut Features: Designed for increased flow compared to standard Thru Hulls and with less drag NPSM / NPT combination thread C83600 Bronze Specification...

35% Off

GROCO 1 Bronze Combo Scoop ThruHull wNut STH1000W

$43.99

~~$68.00~~

1" Bronze Combo Scoop Thru-Hull w/Nut Features: Designed for increased flow compared to standard Thru Hulls NPSM / NPT combination thread C83600 Bronze Specifications:Thread NPS: 1" Specifications...

36% Off

GROCO 114 Bronze Extra Long ThruHull Fitting wNut THXL1250W

$64.99

~~$101.00~~

1-1/4" Bronze Extra Long Thru-Hull Fitting w/Nut Features: Extra long NPSM / NPT combination thread C83600 Bronze Specifications: Hose Size: 1-1/4" Material: Bronze Box Dimensions: 3"H x 3"W x 6"...

35% Off

GROCO 34 Bronze Extra Long ThruHull Fitting wNut THXL750W

$31.99

~~$49.00~~

3/4" Bronze Extra Long Thru-Hull Fitting w/Nut Features: Extra long NPSM / NPT combination thread C83600 Bronze Specifications: Hose Size: 3/4" Material: Bronze Box Dimensions: 2"H x 2"W x 7"L WT...

35% Off

GROCO 1 Stainless Steel Extra Long ThruHull Fitting wNut THXL1000WS

$42.99

~~$66.00~~

1" Stainless Steel Extra Long Thru-Hull Fitting w/Nut Features: Extra long NPSM / NPT combination thread #316 Stainless Steel Specifications: Material: Stainless Steel Hose Size: 1" Box Dimension...

36% Off

GROCO Bronze Hose Barb ThruHull Fitting 12 HTH500

$15.99

~~$25.00~~

Bronze Hose Barb Thru-Hull Fitting - 1/2" Features: NPS Thread With Hose Connection C83600 Bronze UL Listed 647B Specifications: Hose Size: 1/2" Material: Bronze Box Dimensions: 3"H x 3"W x 4"L W...

34% Off

GROCO Stainless Steel Hose Barb ThruHull Fitting 1 HTH1000S

$26.99

~~$41.00~~

Stainless Steel Hose Barb Thru-Hull Fitting - 1" Features: NPS Thread With Hose Connection #316 Stainless Steel UL Listed 647B Specifications: Hose Size: 1" Material: Stainless Steel Box Dimensio...

36% Off

GROCO 114 Stainless Steel Extra Long ThruHull Fitting wNut THXL1250WS

$49.99

~~$78.00~~

1-1/4" Stainless Steel Extra Long Thru-Hull Fitting w/Nut Features: Extra long NPSM / NPT combination thread #316 Stainless Steel Specifications: Hose Size: 1-1/4" Material: Stainless Steel Box D...

36% Off

GROCO Bronze Hose Barb ThruHull Fitting 118 HTH1125

$37.99

~~$59.00~~

Bronze Hose Barb Thru-Hull Fitting - 1-1/8" Features: NPS Thread With Hose Connection C83600 Bronze UL Listed 647B Specifications: Hose Size: 1-1/8" Material: Bronze Box Dimensions: 3"H x 3"W x 4...

36% Off

GROCO 2 Stainless Steel Extra Long ThruHull Fitting wNut THXL2000WS

$54.99

~~$86.00~~

2" Stainless Steel Extra Long Thru-Hull Fitting w/Nut Features: Extra long NPSM / NPT combination thread #316 Stainless Steel Specifications: Hose Size: 2" Material: Stainless Steel Box Dimension...

35% Off

GROCO Bronze Hose Barb ThruHull Fitting 114 HTH1250

$44.99

~~$69.00~~

Bronze Hose Barb Thru-Hull Fitting - 1-1/4" Features: NPS Thread With Hose Connection C83600 Bronze UL Listed 647B Specifications: Hose Size: 1-1/4" Material: Bronze Box Dimensions: 3"H x 3"W x 4...

34% Off

GROCO Stainless Steel Hose Barb ThruHull Fitting 34 HTH750S

$22.99

~~$35.00~~

Stainless Steel Hose Barb Thru-Hull Fitting - 3/4" Features: NPS Thread With Hose Connection #316 Stainless Steel UL Listed 647B Specifications: Hose Size: 3/4" Material: Stainless Steel Box Dime...

35% Off

GROCO 112 Stainless Steel Extra Long ThruHull Fitting wNut THXL1500WS

$50.99

~~$79.00~~

1-1/2" Stainless Steel Extra Long Thru-Hull Fitting w/Nut Features: Extra long NPSM / NPT combination thread #316 Stainless Steel Specifications: Hose Size: 1-1/2" Material: Stainless Steel Box D...

36% Off

GROCO 34 Stainless Steel Extra Long ThruHull Fitting wNut THXL750WS

$37.99

~~$59.00~~

3/4" Stainless Steel Extra Long Thru-Hull Fitting w/Nut Features: Extra long NPSM / NPT combination thread #316 Stainless Steel Specifications: Hose Size: 3/4" Material: Stainless Steel Box Dimen...

35% Off

GROCO 114 Bronze High Speed ThruHull Fitting wNut HSTH1250W

$47.99

~~$74.00~~

1-1/4" Bronze High Speed Thru-Hull Fitting w/Nut Features: Designed for increased flow compared to standard Thru Hulls and with less drag NPSM / NPT combination thread C83600 Bronze Specification...

35% Off

GROCO Stainless Steel Hose Barb ThruHull Fitting 118 HTH1125S

$27.99

~~$43.00~~

Stainless Steel Hose Barb Thru-Hull Fitting - 1-1/8" Features: NPS Thread With Hose Connection #316 Stainless Steel UL Listed 647B Specifications: Hose Size: 1-1/8" Material: Stainless Steel Box ...

36% Off

GROCO Bronze Hose Barb ThruHull Fitting 2 HTH2000

$72.99

~~$114.00~~

Bronze Hose Barb Thru-Hull Fitting - 2" Features: NPS Thread With Hose Connection C83600 Bronze UL Listed 647B Specifications: Hose Size: 2" Material: Bronze Box Dimensions: 4"H x 4"W x 5"L WT: 1...

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