Marine Plumbing & Ventilation - Thru-Hull Fittings

103 products

35% Off

GROCO Stainless Steel Hose Barb ThruHull Fitting 2 HTH2000S

$67.99

~~$105.00~~

Stainless Steel Hose Barb Thru-Hull Fitting - 2" Features: NPS Thread With Hose Connection #316 Stainless Steel UL Listed 647B Specifications: Hose Size: 2" Material: Stainless Steel Box Dimensio...

34% Off

GROCO Stainless Steel Hose Barb ThruHull Fitting 58 HTH625S

$22.99

~~$35.00~~

Stainless Steel Hose Barb Thru-Hull Fitting - 5/8" Features: NPS Thread With Hose Connection #316 Stainless Steel UL Listed 647B Specifications: Hose Size: 5/8" Material: Stainless Steel Box Dime...

36% Off

GROCO Stainless Steel Hose Barb ThruHull Fitting 112 HTH1500S

$54.99

~~$86.00~~

Stainless Steel Hose Barb Thru-Hull Fitting - 1-1/2" Features: NPS Thread With Hose Connection #316 Stainless Steel UL Listed 647B Specifications: Hose Size: 1-1/2" Material: Stainless Steel Box ...

35% Off

GROCO Bronze Hose Barb ThruHull Fitting 112 HTH1500

$56.99

~~$88.00~~

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

35% Off

GROCO Stainless Steel Hose Barb ThruHull Fitting 12 HTH500S

$25.99

~~$40.00~~

Stainless Steel Hose Barb Thru-Hull Fitting - 1/2" Features: NPS Thread With Hose Connection #316 Stainless Steel UL Listed 647B Specifications: Hose Size: 1/2" Material: Stainless Steel Box Dime...

36% Off

GROCO 2 Bronze High Speed ThruHull Fitting wNut HSTH2000W

$77.99

~~$122.00~~

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 Specifications: H...

35% Off

GROCO 34 Bronze Extra Long High Speed ThruHull Fitting wNut HSTHXL750W

$30.99

~~$48.00~~

3/4" Bronze Extra Long High Speed Thru-Hull Fitting w/Nut Features: Designed for increased flow compared to standard Thru Hulls and with less drag Extra Long NPSM / NPT combination thread C83600 B...

34% Off

GROCO Bronze Hose Barb ThruHull Fitting 34 HTH750

$24.99

~~$38.00~~

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

36% Off

GROCO 12 Bronze Combo Scoop ThruHull wNut STH500W

$24.99

~~$39.00~~

1/2" Bronze Combo Scoop Thru-Hull w/NutFeatures: Designed for increased flow compared to standard Thru Hulls NPSM / NPT combination thread C83600 Bronze Specifications:Thread NPS: 1/2" Specificati...

35% Off

GROCO Stainless Steel Hose Barb ThruHull Fitting 114 HTH1250S

$44.99

~~$69.00~~

Stainless Steel Hose Barb Thru-Hull Fitting - 1-1/4" Features: NPS Thread With Hose Connection #316 Stainless Steel UL Listed 647B Specifications: Hose Size: 1-1/4" Material: Stainless Steel Box ...

36% Off

GROCO 112 90 Degree Hose ThruHull Fitting HTHC1500S

$132.99

~~$208.00~~

1-1/2" 90 Degree Hose Thru-Hull Fitting Features: 90 Degree Barb #316 Stainless Steel Thru Hull with Bronze Hose Connection UL Listed 647B Specifications: Hose Size: 1-1/2" Material: Stainless St...

36% Off

GROCO 1 90 Degree Hose ThruHull Fitting HTHC1000S

$46.99

~~$73.00~~

1" 90 Degree Hose Thru-Hull Fitting Features: 90 Degree Barb #316 Stainless Steel Thru Hull with Bronze Hose Connection UL Listed 647B Specifications: Hose Size: 1" Material: Stainless Steel Box ...

35% Off

GROCO 114 90 Degree Hose ThruHull Fitting HTHC1250S

$74.99

~~$116.00~~

1-1/4" 90 Degree Hose Thru-Hull Fitting Features: 90 Degree Barb #316 Stainless Steel Thru Hull with Bronze Hose Connection UL Listed 647B Specifications: Hose Size: 1-1/4" Material: Stainless St...

35% Off

GROCO 34 Bronze High Speed ThruHull Fitting wNut HSTH750W

$16.99

~~$26.00~~

3/4" 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 Specifications:...

36% Off

GROCO 112 Bronze Extra Long ThruHull Fitting wNut THXL1500W

$68.99

~~$108.00~~

1-1/2" Bronze Extra Long Thru-Hull Fitting w/Nut Features: Extra long NPSM / NPT combination thread C83600 Bronze Specifications: Hose Size: 1-1/2" Material: Bronze Box Dimensions: 3"H x 3"W x 6"...

35% Off

GROCO Bronze Hose Barb ThruHull Fitting 1 HTH1000

$33.99

~~$52.00~~

Bronze Hose Barb Thru-Hull Fitting - 1" Features: NPS Thread With Hose Connection C83600 Bronze UL Listed 647B Specifications: Hose Size: 1" Material: Bronze Box Dimensions: 3"H x 3"W x 4"L WT: 0...

36% Off

GROCO 112 Bronze Combo Scoop ThruHull wNut STH1500W

$68.99

~~$108.00~~

1-1/2" 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: 1-1/2" Specif...

34% Off

GROCO Bronze Hose Barb ThruHull Fitting 58 HTH625

$20.99

~~$32.00~~

Bronze Hose Barb Thru-Hull Fitting - 5/8" Features: NPS Thread With Hose Connection C83600 Bronze UL Listed 647B Specifications: Hose Size: 5/8" Material: Bronze Box Dimensions: 3"H x 3"W x 4"L W...

36% Off

GROCO 2 Bronze Combo Scoop ThruHull wNut STH2000W

$116.99

~~$183.00~~

2" 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: 2" Specifications...

36% Off

GROCO 114 NPS NPT Combo Bronze ThruHull Fitting wNut TH1250W

$38.99

~~$61.00~~

1-1/4" NPS NPT Combo Bronze Thru-Hull Fitting with NutFeatures: NPSM / NPT combination thread C83600 Bronze Sizes from 1/2" to 5" UL Listed 647B Available with (-W) or without nut (-L) BSPP and St...

36% Off

GROCO 212 Bronze Combo Scoop ThruHull wNut STH2500W

$194.99

~~$304.00~~

2-1/2" 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: 2-1/2" Specif...

36% Off

GROCO 114 Bronze Combo Scoop ThruHull wNut STH1250W

$61.99

~~$97.00~~

1-1/4" 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: 1-1/4" Specif...

36% Off

GROCO 2 NPS NPT Combo Stainless Steel ThruHull Fitting wNut TH2000WS

$60.99

~~$95.00~~

2" NPS NPT Combo Stainless Steel Thru-Hull Fitting with NutFeatures: NPSM / NPT combination thread #316 Stainless Steel Sizes from 1/2" to 3" UL Listed 647B BSPP and Stainless Steel models availab...

32% Off

GROCO 34 NPS NPT Combo Stainless Steel ThruHull Fitting wNut TH750WS

$14.99

~~$22.00~~

3/4" NPS NPT Combo Stainless Steel Thru-Hull Fitting with NutFeatures: NPSM / NPT combination thread #316 Stainless Steel Sizes from 1/2" to 3" UL Listed 647B BSPP and Stainless Steel models avail...

32% Off

GROCO 12 NPS NPT Combo Stainless Steel ThruHull Fitting wNut TH500WS

$14.99

~~$22.00~~

1/2" NPS NPT Combo Stainless Steel Thru-Hull Fitting with NutFeatures: NPSM / NPT combination thread #316 Stainless Steel Sizes from 1/2" to 3" UL Listed 647B BSPP and Stainless Steel models avail...

36% Off

GROCO 112 NPS NPT Combo Bronze ThruHull Fitting wNut TH1500W

$49.99

~~$78.00~~

1-1/2" NPS NPT Combo Bronze Thru-Hull Fitting with NutFeatures: NPSM / NPT combination thread C83600 Bronze Sizes from 1/2" to 5" UL Listed 647B Available with (-W) or without nut (-L) BSPP and St...

36% Off

GROCO 112 NPS NPT Combo Stainless Steel ThruHull Fitting wNut TH1500WS

$44.99

~~$70.00~~

1-1/2" NPS NPT Combo Stainless Steel Thru-Hull Fitting with NutFeatures: NPSM / NPT combination thread #316 Stainless Steel Sizes from 1/2" to 3" UL Listed 647B BSPP and Stainless Steel models ava...

36% Off

GROCO 114 NPS NPT Combo Stainless Steel ThruHull Fitting wNut TH1250WS

$42.99

~~$67.00~~

1-1/4" NPS NPT Combo Stainless Steel Thru-Hull Fitting with NutFeatures: NPSM / NPT combination thread #316 Stainless Steel Sizes from 1/2" to 3" UL Listed 647B BSPP and Stainless Steel models ava...

36% Off

GROCO 34 NPS NPT Combo Bronze ThruHull Fitting wNut TH750W

$15.99

~~$25.00~~

3/4" NPS NPT Combo Bronze Thru-Hull Fitting with NutFeatures: NPSM / NPT combination thread C83600 Bronze Sizes from 1/2" to 5" UL Listed 647B Available with (-W) or without nut (-L) BSPP and Stai...

35% Off

GROCO 1 NPS NPT Combo Bronze ThruHull Fitting wNut TH1000W

$23.99

~~$37.00~~

1" NPS NPT Combo Bronze Thru-Hull Fitting with NutFeatures: NPSM / NPT combination thread C83600 Bronze Sizes from 1/2" to 5" UL Listed 647B Available with (-W) or without nut (-L) BSPP and Stainl...

37% Off

Perko ThruHull Scupper fMounting Through Transom 0323DP

$37.99

~~$60.09~~

Thru-Hull Scupper for Mounting Through TransomFeatures: Molded White Polymer Soft Black Flapper Nut and Mounting Hardware Included Specifications: Hose Size: 1-1/2" Mounting Hole Diameter: 1-7/8" ...

36% Off

GROCO 2 NPS NPT Combo Bronze ThruHull Fitting wNut TH2000W

$76.99

~~$120.00~~

2" NPS NPT Combo Bronze Thru-Hull Fitting with NutFeatures: NPSM / NPT combination thread C83600 Bronze Sizes from 1/2" to 5" UL Listed 647B Available with (-W) or without nut (-L) BSPP and Stainl...

35% Off

GROCO 12 NPS NPT Combo Bronze ThruHull Fitting wNut TH500W

$14.99

~~$23.00~~

1/2" NPS NPT Combo Bronze Thru-Hull Fitting with NutFeatures: NPSM / NPT combination thread C83600 Bronze Sizes from 1/2" to 5" UL Listed 647B Available with (-W) or without nut (-L) BSPP and Stai...

35% Off

GROCO 1 NPS NPT Combo Stainless Steel ThruHull Fitting wNut TH1000WS

$38.99

~~$60.00~~

1" NPS NPT Combo Stainless Steel Thru-Hull Fitting with NutFeatures: NPSM / NPT combination thread #316 Stainless Steel Sizes from 1/2" to 3" UL Listed 647B BSPP and Stainless Steel models availab...

18% Off

Attwood Plastic ThruHull Fitting 112 White 38753

$8.99

~~$10.99~~

Plastic Thru-Hull Fitting - 1-1/2" - WhiteThese thru-hulls are made with a durable, thermoplastic construction which prevents electrolysis.Caution: Thru-Hull connectors are designed for installati...

32% Off

Perko 34 ThruHull Fitting fHose Plastic Narrow Flange 0301DP5

$5.99

~~$8.86~~

3/4" Thru-Hull Fitting f/Hose - Plastic Narrow FlangeFeatures: Molded white Narrow Flange Specifications: Hose Size: 3/4" Mounting Hole Diameter: 1" Max. Hull Thickness: 1-7/16" O.D. Flange: 1-1/2...

28% Off

Perko 118 ThruHull Fitting fHose Narrow Flange Plastic 0301DP6A

$11.99

~~$16.76~~

1-1/8" Thru-Hull Fitting for Hose Narrow Flange - PlasticFeatures: Molded white Narrow Flange Specifications: Hose Size: 1-1/8" Mounting Hole Diameter: 1-5/16" Max. Hull Thickness: 1-1/2" O.D....

45% Off

Perko 34 ThruHull Fitting wPipe Thread Bronze Extra Long Max Hull 5 Thick 0348DP5PLB

$64.99

~~$118.72~~

Extra Long Thru-Hull Connection for Use with PipePart #: 0348DP5PLBFlange is machined to fit the hull and grooved to retain bedding compound neck is threaded to approximately 3/8 inch from flange....

53% Off

Perko 112 ThruHull Fitting wPipe Thread Bronze MADE IN THE USA 0322DP8PLB

$74.99

~~$160.39~~

Perko 1-1/2" Thru-Hull Fitting w/ Pipe Thread BronzeFlange is machined to fit hull and grooved to retain bedding compound. Neck is threaded to approximately 3/8 inch from flange.Cast bronze.Techn...

47% Off

Perko 34 ThruHull Fitting f Hose Bronze MADE IN THE USA 0350005DPP

$35.99

~~$67.77~~

Perko 3/4" Thru-Hull Connection f/ use with Hose BronzeFlange is machined to fit and grooved to retain bedding compound neck isthreaded to approximately 3/16 inch from flange. Cast bronze, plain o...

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