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Marine Plumbing & Ventilation - Thru-Hull Fittings

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Attwood White Plastic 90 Degree Thru-Hull Connector - 1-1/8" Inner Diameter [3879-3]
Regular price
$14.95
Sale price
$14.95
Regular price
$16.19
Regular price
$14.95
Sale price
$14.95
Regular price
$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...
GROCO 1" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-1000-WS]
Regular price
$46.95
Sale price
$46.95
Regular price
$60.00
Regular price
$46.95
Sale price
$46.95
Regular price
$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...
GROCO Bronze Hose Barb Thru-Hull Fitting - 1-1/4" [HTH-1250]
-20%
GROCO Bronze Hose Barb Thru-Hull Fitting - 1-1/4" [HTH-1250]
Regular price
$45.95
Sale price
$45.95
Regular price
$58.00
Regular price
$45.95
Sale price
$45.95
Regular price
$58.00
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:...
GROCO 1-1/2" 90 Degree Hose Thru-Hull Fitting [HTHC-1500-S]
-22%
GROCO 1-1/2" 90 Degree Hose Thru-Hull Fitting [HTHC-1500-S]
Regular price
$148.95
Sale price
$148.95
Regular price
$191.00
Regular price
$148.95
Sale price
$148.95
Regular price
$191.00
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"...
GROCO 1" Bronze Combo Scoop Thru-Hull w/Nut [STH-1000-W]
-21%
GROCO 1" Bronze Combo Scoop Thru-Hull w/Nut [STH-1000-W]
Regular price
$46.95
Sale price
$46.95
Regular price
$60.00
Regular price
$46.95
Sale price
$46.95
Regular price
$60.00
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:...
GROCO 3/4" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut [TH-750-W]
Regular price
$17.95
Sale price
$17.95
Regular price
$23.00
Regular price
$17.95
Sale price
$17.95
Regular price
$23.00
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)...
GROCO 1-1/2" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut [TH-1500-W]
Regular price
$55.95
Sale price
$55.95
Regular price
$71.00
Regular price
$55.95
Sale price
$55.95
Regular price
$71.00
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)...
Forespar Pro Series Valve Stainless Steel Capped Thru-Hull Fits 1/2"-3/4" [930001SS]
Regular price
$14.95
Sale price
$14.95
Regular price
$19.99
Regular price
$14.95
Sale price
$14.95
Regular price
$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...
Perko 1-1/8" Thru-Hull Fitting f/ Hose Plastic MADE IN THE USA [0328DP6A]
Regular price
$4.95
Sale price
$4.95
Regular price
$16.19
Regular price
$4.95
Sale price
$4.95
Regular price
$16.19
Perko 1-â…›" Thru-Hull Fitting f/ Hose Plastic Molded White Plastic Broad FlangeTechnical Information: Hose Size Inches: 1-1/8 Mounting Hole Diameter Inches: 1-1/2 Maximum Hull Thickness...
GROCO 1" Stainless Steel Extra Long Thru-Hull Fitting w/Nut [THXL-1000-WS]
Regular price
$49.95
Sale price
$49.95
Regular price
$64.00
Regular price
$49.95
Sale price
$49.95
Regular price
$64.00
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"...
GROCO 1-1/4" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut [TH-1250-W]
Regular price
$42.95
Sale price
$42.95
Regular price
$55.00
Regular price
$42.95
Sale price
$42.95
Regular price
$55.00
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)...
Perko 3/4" Thru-Hull Fitting f/ Hose Plastic MADE IN THE USA [0328DP5]
Regular price
$4.95
Sale price
$4.95
Regular price
$8.06
Regular price
$4.95
Sale price
$4.95
Regular price
$8.06
Perko 3/4" Thru-Hull Fitting f/ Hose Plastic Molded White Plastic Broad FlangeTechnical Information: Hose Size Inches: 3/4 Mounting Hole Diameter Inches: 1 Maximum Hull Thickness...
Attwood Stainless Steel Thru-Hull Short Straight Barbed - 3/4" Inner Diameter [66541-3]
Regular price
$26.95
Sale price
$26.95
Regular price
$29.74
Regular price
$26.95
Sale price
$26.95
Regular price
$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...
Perko 1-1/4" Intake Strainer Bronze MADE IN THE USA [0065DP7PLB]
Regular price
$87.95
Sale price
$87.95
Regular price
$181.75
Regular price
$87.95
Sale price
$87.95
Regular price
$181.75
Perko 1-1/4" Intake Strainer BronzeCast bronzeMachined SlotsTechnical Information: Maximum Pipe Size Inches: 1-1/4 Maximum Hull Thickness Inches: 3 Dimensions Strainer Inches: 3-1/4 x 4-1/4 Model...
Perko 3-1/2" x 2-1/2" Scoop Strainer Bronze MADE IN THE USA [0066DP1PLB]
Regular price
$20.95
Sale price
$20.95
Regular price
$35.86
Regular price
$20.95
Sale price
$20.95
Regular price
$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:...
GROCO 2" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut [TH-2000-W]
Regular price
$83.95
Sale price
$83.95
Regular price
$107.00
Regular price
$83.95
Sale price
$83.95
Regular price
$107.00
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)...
GROCO Stainless Steel Hose Barb Thru-Hull Fitting - 2" [HTH-2000-S]
Regular price
$80.95
Sale price
$80.95
Regular price
$104.00
Regular price
$80.95
Sale price
$80.95
Regular price
$104.00
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...
Perko 3/4" Thru-Hull Fitting f/Hose - Plastic Narrow Flange [0301DP5]
Regular price
$6.95
Sale price
$6.95
Regular price
$8.86
Regular price
$6.95
Sale price
$6.95
Regular price
$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....
Perko 3/4" Thru-Hull Fitting f/ Hose Bronze MADE IN THE USA [0350005DPP]
Regular price
$41.95
Sale price
$41.95
Regular price
$67.77
Regular price
$41.95
Sale price
$41.95
Regular price
$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...
GROCO 3/4" 90 Degree Hose Thru-Hull Fitting [HTHC-750-S]
-21%
GROCO 3/4" 90 Degree Hose Thru-Hull Fitting [HTHC-750-S]
Regular price
$42.95
Sale price
$42.95
Regular price
$55.00
Regular price
$42.95
Sale price
$42.95
Regular price
$55.00
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...
GROCO 1" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut [TH-1000-W]
Regular price
$25.95
Sale price
$25.95
Regular price
$33.00
Regular price
$25.95
Sale price
$25.95
Regular price
$33.00
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)...
Perko 1/2" Thru-Hull Fitting w/Pipe Thread Bronze MADE IN THE USA [0322DP4PLB]
Regular price
$33.95
Sale price
$33.95
Regular price
$51.96
Regular price
$33.95
Sale price
$33.95
Regular price
$51.96
Perko 1/2" Thru-Hull Fitting w/ Pipe Thread BronzeFlange is machined to fit hull and grooved to retain bedding compound. Neckis threaded to approximately 3/8 inch...
Perko 1-1/8" Thru-Hull Fitting f/Hose Narrow Flange - Plastic [0301DP6A]
Regular price
$12.95
Sale price
$12.95
Regular price
$16.76
Regular price
$12.95
Sale price
$12.95
Regular price
$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"...
Perko 1" Thru-Hull Fitting f/ Hose Plastic MADE IN THE USA [0328DP6]
Regular price
$5.95
Sale price
$5.95
Regular price
$16.19
Regular price
$5.95
Sale price
$5.95
Regular price
$16.19
Perko 1" Thru-Hull Fitting f/ Hose Plastic Molded White Plastic Broad FlangeTechnical Information: Hose Size Inches: 1 Mounting Hole Diameter Inches: 1-1-5/16 Maximum Hull Thickness...
GROCO 3/4" Bronze Extra Long High Speed Thru-Hull Fitting w/Nut [HSTHXL-750-W]
Regular price
$31.95
Sale price
$31.95
Regular price
$40.00
Regular price
$31.95
Sale price
$31.95
Regular price
$40.00
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...
GROCO 1-1/4" Bronze Combo Scoop Thru-Hull w/Nut [STH-1250-W]
-22%
GROCO 1-1/4" Bronze Combo Scoop Thru-Hull w/Nut [STH-1250-W]
Regular price
$66.95
Sale price
$66.95
Regular price
$86.00
Regular price
$66.95
Sale price
$66.95
Regular price
$86.00
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" Specifications:...
GROCO 1-1/2" Stainless Steel Extra Long Thru-Hull Fitting w/Nut [THXL-1500-WS]
Regular price
$61.95
Sale price
$61.95
Regular price
$79.00
Regular price
$61.95
Sale price
$61.95
Regular price
$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...
Forespar Pro Series Valve Stainless Steel Capped Thru-Hull Fits 1"-1-1/4" [930002SS]
Regular price
$17.95
Sale price
$17.95
Regular price
$19.99
Regular price
$17.95
Sale price
$17.95
Regular price
$19.99
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...
Forespar Pro Series Valve Stainless Steel Capped Thru-Hull Fits 1-1/2"-2" [930003SS]
Regular price
$18.95
Sale price
$18.95
Regular price
$19.99
Regular price
$18.95
Sale price
$18.95
Regular price
$19.99
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...
Attwood Stainless Steel Thru-Hull Short Straight Barbed - 1-1/2" Inner Diameter [66545-3]
Regular price
$54.95
Sale price
$54.95
Regular price
$61.99
Regular price
$54.95
Sale price
$54.95
Regular price
$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...
GROCO Bronze Hose Barb Thru-Hull Fitting - 1/2" [HTH-500]
-19%
GROCO Bronze Hose Barb Thru-Hull Fitting - 1/2" [HTH-500]
Regular price
$16.95
Sale price
$16.95
Regular price
$21.00
Regular price
$16.95
Sale price
$16.95
Regular price
$21.00
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:...
GROCO 1/2" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-500-WS]
Regular price
$17.95
Sale price
$17.95
Regular price
$22.00
Regular price
$17.95
Sale price
$17.95
Regular price
$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...
GROCO 2" Bronze Extra Long Thru-Hull Fitting w/Nut [THXL-2000-W]
Regular price
$96.95
Sale price
$96.95
Regular price
$124.00
Regular price
$96.95
Sale price
$96.95
Regular price
$124.00
2" Bronze Extra Long Thru-Hull Fitting w/Nut Features: Extra long NPSM / NPT combination thread C83600 Bronze Specifications: Hose Size: 2" Material: Bronze Box Dimensions: 4"H...
Attwood Plastic Thru-Hull Fitting - 1-1/2" - White [3875-3]
-9%
Attwood Plastic Thru-Hull Fitting - 1-1/2" - White [3875-3]
Regular price
$9.95
Sale price
$9.95
Regular price
$10.99
Regular price
$9.95
Sale price
$9.95
Regular price
$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 installation above...
GROCO 3/4" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-750-WS]
Regular price
$16.95
Sale price
$16.95
Regular price
$21.00
Regular price
$16.95
Sale price
$16.95
Regular price
$21.00
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...
Perko 2" Thru-Hull Fitting w/Pipe Thread Bronze MADE IN THE USA [0322009PLB]
Regular price
$107.95
Sale price
$107.95
Regular price
$209.01
Regular price
$107.95
Sale price
$107.95
Regular price
$209.01
Perko 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...
Perko 5" x 3-1/4" Scoop Strainer Bronze MADE IN THE USA [0066DP2PLB]
Regular price
$39.95
Sale price
$39.95
Regular price
$62.16
Regular price
$39.95
Sale price
$39.95
Regular price
$62.16
Perko 5" X 3-1/4" Scoop Strainer BronzeCast bronzeMachine slotsTechnical Information: For Thru-Hull Size Inches: 3/4 & 1 Dimensions Strainer Inches: 5 X 3-1/4 Model Number:...
Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 3/4" Inner Diameter [66547-3]
Regular price
$27.95
Sale price
$27.95
Regular price
$30.39
Regular price
$27.95
Sale price
$27.95
Regular price
$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...
GROCO 3/4" Bronze High Speed Thru-Hull Fitting w/Nut [HSTH-750-W]
Regular price
$17.95
Sale price
$17.95
Regular price
$22.00
Regular price
$17.95
Sale price
$17.95
Regular price
$22.00
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...
GROCO 2-1/2" Bronze Thru-Hull Fitting w/Nut [TH-2500-W]
-22%
GROCO 2-1/2" Bronze Thru-Hull Fitting w/Nut [TH-2500-W]
Regular price
$169.95
Sale price
$169.95
Regular price
$218.00
Regular price
$169.95
Sale price
$169.95
Regular price
$218.00
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...
Attwood Stainless Steel Thru-Hull Short Straight Barbed - 1" Inner Diameter [66542-3]
Regular price
$31.95
Sale price
$31.95
Regular price
$35.16
Regular price
$31.95
Sale price
$31.95
Regular price
$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...
GROCO 3" Bronze Thru-Hull Fitting w/Nut [TH-3000-W]
-22%
GROCO 3" Bronze Thru-Hull Fitting w/Nut [TH-3000-W]
Regular price
$243.95
Sale price
$243.95
Regular price
$313.00
Regular price
$243.95
Sale price
$243.95
Regular price
$313.00
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...
GROCO 1/2" Bronze Combo Scoop Thru-Hull w/Nut [STH-500-W]
-20%
GROCO 1/2" Bronze Combo Scoop Thru-Hull w/Nut [STH-500-W]
Regular price
$27.95
Sale price
$27.95
Regular price
$35.00
Regular price
$27.95
Sale price
$27.95
Regular price
$35.00
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" Specifications:...
Perko 1" Thru-Hull Fitting f/Hose Bronze MADE IN THE USA [0350006DPP]
Regular price
$54.95
Sale price
$54.95
Regular price
$88.08
Regular price
$54.95
Sale price
$54.95
Regular price
$88.08
Perko 1" 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...
Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 1" Inner Diameter [66548-3]
Regular price
$30.95
Sale price
$30.95
Regular price
$35.42
Regular price
$30.95
Sale price
$30.95
Regular price
$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...
Perko 8" x 5-1/8" Scoop Strainer Bronze MADE IN THE USA [0066DP4PLB]
Regular price
$73.95
Sale price
$73.95
Regular price
$114.05
Regular price
$73.95
Sale price
$73.95
Regular price
$114.05
Perko 8" x 5-1/8" 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:...
GROCO 2" Stainless Steel Extra Long Thru-Hull Fitting w/Nut [THXL-2000-WS]
Regular price
$66.95
Sale price
$66.95
Regular price
$86.00
Regular price
$66.95
Sale price
$66.95
Regular price
$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...
GROCO 1" Bronze High Speed Thru-Hull Fitting w/Nut [HSTH-1000-W]
Regular price
$27.95
Sale price
$27.95
Regular price
$35.00
Regular price
$27.95
Sale price
$27.95
Regular price
$35.00
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...
GROCO 1-1/4" Bronze High Speed Thru-Hull Fitting w/Nut [HSTH-1250-W]
Regular price
$48.95
Sale price
$48.95
Regular price
$62.00
Regular price
$48.95
Sale price
$48.95
Regular price
$62.00
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...
GROCO 2" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-2000-WS]
Regular price
$73.95
Sale price
$73.95
Regular price
$94.00
Regular price
$73.95
Sale price
$73.95
Regular price
$94.00
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...

Items 1 to 50 of 98 total