Neptunian Marine
Marine Plumbing & Ventilation - Thru-Hull Fittings
Filters
Forespar Pro Series Valve Stainless Steel Capped Thru-Hull Fits 1-1/2"-2" [930003SS]
Forespar Performance ProductsPro Series Valve Stainless Steel Capped Thru-Hull Fits 1-1/2"-2"Thru-hull only for small Pro Series valves; mushroom head, buttress thread Specifi...
View full detailsGROCO Bronze Hose Barb Thru-Hull Fitting - 1/2" [HTH-500]
GROCOBronze Hose Barb Thru-Hull Fitting - 1/2" Features: NPS Thread With Hose Connection C83600 Bronze UL Listed 647B Specifications: Hose Size: 1/2" ...
View full detailsAttwood Plastic Thru-Hull Fitting - 1-1/2" - White [3875-3]
Attwood MarinePlastic Thru-Hull Fitting - 1-1/2" - WhiteThese thru-hulls are made with a durable, thermoplastic construction which prevents electrolysis.Caution...
View full detailsAttwood Stainless Steel Thru-Hull Standard Straight Barbed - 3/4" Inner Diameter [66547-3]
Attwood MarineStainless Steel Thru-Hull Standard Straight Barbed - 3/4" Inner DiameterPolish your image with these beautiful, durable stainless steel fittings. ...
View full detailsAttwood Stainless Steel Thru-Hull Short Straight Barbed - 1" Inner Diameter [66542-3]
Attwood MarineStainless Steel Thru-Hull Short Straight Barbed - 1" Inner DiameterPolish your image with these beautiful, durable stainless steel fittings. Why s...
View full detailsPerko 1" Thru-Hull Fitting f/Hose Bronze MADE IN THE USA [0350006DPP]
PerkoPerko 1" Thru-Hull Connection f/ use with Hose BronzeFlange is machined to fit and grooved to retain bedding compound neck isthreaded to approxima...
View full detailsAttwood Stainless Steel Thru-Hull Standard Straight Barbed - 1" Inner Diameter [66548-3]
Attwood MarineStainless Steel Thru-Hull Standard Straight Barbed - 1" Inner DiameterPolish your image with these beautiful, durable stainless steel fittings. Wh...
View full detailsPerko 8" x 5-1/8" Scoop Strainer Bronze MADE IN THE USA [0066DP4PLB]
PerkoPerko 8" x 5-1/8" Scoop Strainer BronzeCast bronzeMachine slotsTechnical Information: For Thru-Hull Size Inches: 3/8 & 1/2 Dimensions Straine...
View full detailsGROCO 3/4" Bronze Extra Long Thru-Hull Fitting w/Nut [THXL-750-W]
GROCO3/4" Bronze Extra Long Thru-Hull Fitting w/Nut Features: Extra long NPSM / NPT combination thread C83600 Bronze Specifications: Hose Size: 3/4" M...
View full detailsGROCO 1-1/2" Bronze High Speed Thru-Hull Fitting w/Nut [HSTH-1500-W]
GROCO1-1/2" Bronze High Speed Thru-Hull Fitting w/Nut Features: Designed for increased flow compared to standard Thru Hulls and with less drag NPSM / N...
View full detailsGROCO 1/2" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut [TH-500-W]
GROCO1/2" NPS NPT Combo Bronze Thru-Hull Fitting with NutFeatures: NPSM / NPT combination thread C83600 Bronze Sizes from 1/2" to 5" UL Listed 647B Ava...
View full detailsGROCO Bronze Hose Barb Thru-Hull Fitting - 1-1/2" [HTH-1500]
GROCOBronze Hose Barb Thru-Hull Fitting - 1-1/2" Features: NPS Thread With Hose Connection C83600 Bronze UL Listed 647B Specifications: Hose Size: 1-1...
View full detailsPerko Thru-Hull Scupper f/Mounting Through Transom [0323DP]
PerkoThru-Hull Scupper for Mounting Through TransomFeatures: Molded White Polymer Soft Black Flapper Nut and Mounting Hardware Included Specifications:...
View full detailsGROCO 3/4" Stainless Steel Extra Long Thru-Hull Fitting w/Nut [THXL-750-WS]
GROCO3/4" Stainless Steel Extra Long Thru-Hull Fitting w/Nut Features: Extra long NPSM / NPT combination thread #316 Stainless Steel Specifications: H...
View full detailsGROCO Stainless Steel Hose Barb Thru-Hull Fitting - 3/4" [HTH-750-S]
GROCOStainless Steel Hose Barb Thru-Hull Fitting - 3/4" Features: NPS Thread With Hose Connection #316 Stainless Steel UL Listed 647B Specifications: ...
View full detailsPerko 5/8" Thru-Hull Fitting f/ Hose Bronze MADE IN THE USA [0350004DPP]
PerkoPerko 5/8" Thru-Hull Connection f/ use with Hose BronzeFlange is machined to fit and grooved to retain bedding compound neck isthreaded to approxi...
View full detailsPerko 1" Thru-Hull Fitting w/Pipe Thread Bronze MADE IN THE USA [0322DP6PLB]
PerkoPerko 1" Thru-Hull Fitting w/ Pipe Thread BronzeFlange is machined to fit hull and grooved to retain bedding compound. Neckis threaded to approxi...
View full detailsGROCO Bronze Hose Barb Thru-Hull Fitting - 5/8" [HTH-625]
GROCOBronze Hose Barb Thru-Hull Fitting - 5/8" Features: NPS Thread With Hose Connection C83600 Bronze UL Listed 647B Specifications: Hose Size: 5/8" ...
View full detailsAttwood White Plastic 90 Degree Thru-Hull Connector - 3/4" Inner Diameter [3877-3]
Attwood MarineWhite Plastic 90 Degree Thru-Hull Connector - 3/4" Inner Diameter90° Thru-Hulls are ideal for tight installations, such as livewell overflow drain...
View full detailsAttwood Stainless Steel Thru-Hull Standard Straight Barbed - 1-1/2" Inner Diameter [66551-3]
Attwood MarineStainless Steel Thru-Hull Standard Straight Barbed - 1-1/2" Inner DiameterPolish your image with these beautiful, durable stainless steel fittings...
View full detailsGROCO 1" 90 Degree Hose Thru-Hull Fitting [HTHC-1000-S]
GROCO1" 90 Degree Hose Thru-Hull Fitting Features: 90 Degree Barb #316 Stainless Steel Thru Hull with Bronze Hose Connection UL Listed 647B Specificat...
View full detailsGROCO Stainless Steel Hose Barb Thru-Hull Fitting - 1-1/4" [HTH-1250-S]
GROCOStainless Steel Hose Barb Thru-Hull Fitting - 1-1/4" Features: NPS Thread With Hose Connection #316 Stainless Steel UL Listed 647B Specifications...
View full detailsGROCO Stainless Steel Hose Barb Thru-Hull Fitting - 1" [HTH-1000-S]
GROCOStainless Steel Hose Barb Thru-Hull Fitting - 1" Features: NPS Thread With Hose Connection #316 Stainless Steel UL Listed 647B Specifications: Ho...
View full detailsGROCO 1-1/4" Stainless Steel Extra Long Thru-Hull Fitting w/Nut [THXL-1250-WS]
GROCO1-1/4" Stainless Steel Extra Long Thru-Hull Fitting w/Nut Features: Extra long NPSM / NPT combination thread #316 Stainless Steel Specifications:...
View full details