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![GROCO 1" Slotted Hi Speed Thru-Hull w\/Nut [HSSLTH-1000-W]](https://cdn11.bigcommerce.com/s-hbdnd2os5x/images/stencil/590x590/products/33405/45555/111451XL__94071.1762979531.jpg?c=1 "GROCO 1\" Slotted Hi Speed Thru-Hull w\/Nut [HSSLTH-1000-W]")
GROCO 1" Slotted Hi Speed Thru-Hull w/Nut [HSSLTH-1000-W]
GROCODEAN-111451$44.99RRP: $69.001" Slotted Hi Speed Thru-Hull with NutFeatures:1" NPSM / NPT combination threadC83600 BronzeWith NutSlotted Specifications:Hose Size: 1"Material: BronzeBox Dimensions: 3"H x 3"W x... -
![GROCO 1" Stainless Steel Extra Long Thru-Hull Fitting w\/Nut [THXL-1000-WS]](https://cdn11.bigcommerce.com/s-hbdnd2os5x/images/stencil/590x590/products/13006/15672/75349XL__75541.1715743632.jpg?c=1 "GROCO 1\" Stainless Steel Extra Long Thru-Hull Fitting w\/Nut [THXL-1000-WS]")
GROCO 1" Stainless Steel Extra Long Thru-Hull Fitting w/Nut [THXL-1000-WS]
GROCODEAN-75349$42.99RRP: $66.001" Stainless Steel Extra Long Thru-Hull Fitting w/Nut Features:Extra long NPSM / NPT combination thread#316 Stainless Steel Specifications:Material: Stainless SteelHose Size: 1"Box Dimensions:... -
![GROCO 1-1\/2" 90 Degree Hose Thru-Hull Fitting [HTHC-1500-S]](https://cdn11.bigcommerce.com/s-hbdnd2os5x/images/stencil/590x590/products/13044/15710/75392XL__76908.1715743709.jpg?c=1 "GROCO 1-1\/2\" 90 Degree Hose Thru-Hull Fitting [HTHC-1500-S]")
GROCO 1-1/2" 90 Degree Hose Thru-Hull Fitting [HTHC-1500-S]
GROCODEAN-75392$132.99RRP: $208.001-1/2" 90 Degree Hose Thru-Hull Fitting Features:90 Degree Barb#316 Stainless Steel Thru Hull with Bronze Hose ConnectionUL Listed 647B Specifications:Hose Size: 1-1/2"Material: Stainless... -
![GROCO 1-1\/2" Ball Valve\/Seacock Raw Water Strainer Combo [BVS-1500]](https://cdn11.bigcommerce.com/s-hbdnd2os5x/images/stencil/590x590/products/12519/14940/74401XL__68681.1715742439.jpg?c=1 "GROCO 1-1\/2\" Ball Valve\/Seacock Raw Water Strainer Combo [BVS-1500]")
GROCO 1-1/2" Ball Valve/Seacock Raw Water Strainer Combo [BVS-1500]
GROCODEAN-74401$1,149.99RRP: $2,000.001-1/2" Ball Valve/Seacock & Raw Water Strainer ComboFeatures:Square hole in handle accepts standard ratchet1-1/4" sizes and larger include one grease zerk fitting for lubrication (use only with... -
![GROCO 1-1\/2" Bronze Combo Scoop Thru-Hull w\/Nut [STH-1500-W]](https://cdn11.bigcommerce.com/s-hbdnd2os5x/images/stencil/590x590/products/12990/15656/75333XL__91103.1715743600.jpg?c=1 "GROCO 1-1\/2\" Bronze Combo Scoop Thru-Hull w\/Nut [STH-1500-W]")
GROCO 1-1/2" Bronze Combo Scoop Thru-Hull w/Nut [STH-1500-W]
GROCODEAN-75333$68.99RRP: $108.001-1/2" Bronze Combo Scoop Thru-Hull w/Nut Features:Designed for increased flow compared to standard Thru HullsNPSM / NPT combination threadC83600 BronzeSpecifications:Thread NPS: 1-1/2"... -
![GROCO 1-1\/2" Bronze Extra Long Thru-Hull Fitting w\/Nut [THXL-1500-W]](https://cdn11.bigcommerce.com/s-hbdnd2os5x/images/stencil/590x590/products/13003/15669/75346XL__95085.1715743626.jpg?c=1 "GROCO 1-1\/2\" Bronze Extra Long Thru-Hull Fitting w\/Nut [THXL-1500-W]")
GROCO 1-1/2" Bronze Extra Long Thru-Hull Fitting w/Nut [THXL-1500-W]
GROCODEAN-75346$68.99RRP: $108.001-1/2" Bronze Extra Long Thru-Hull Fitting w/Nut Features:Extra long NPSM / NPT combination threadC83600 Bronze Specifications:Hose Size: 1-1/2"Material: BronzeBox Dimensions: 3"H x... -
![GROCO 1-1\/2" Bronze High Speed Thru-Hull Fitting w\/Nut [HSTH-1500-W]](https://cdn11.bigcommerce.com/s-hbdnd2os5x/images/stencil/590x590/products/13031/15697/75379XL__38177.1715743684.jpg?c=1 "GROCO 1-1\/2\" Bronze High Speed Thru-Hull Fitting w\/Nut [HSTH-1500-W]")
GROCO 1-1/2" Bronze High Speed Thru-Hull Fitting w/Nut [HSTH-1500-W]
GROCODEAN-75379$68.99RRP: $108.001-1/2" Bronze High Speed Thru-Hull Fitting w/Nut Features:Designed for increased flow compared to standard Thru Hulls and with less dragNPSM / NPT combination threadC83600 Bronze... -
![GROCO 1-1\/2" Bronze NPS to NPT Flange Adapter [IBVF-1500]](https://cdn11.bigcommerce.com/s-hbdnd2os5x/images/stencil/590x590/products/12440/14850/74233XL__11576.1715742258.jpg?c=1 "GROCO 1-1\/2\" Bronze NPS to NPT Flange Adapter [IBVF-1500]")
GROCO 1-1/2" Bronze NPS to NPT Flange Adapter [IBVF-1500]
GROCODEAN-74233$73.99RRP: $115.001-1/2" Bronze NPS to NPT Flange AdapterIBVF Flanged Adapters have been developed to address several common problems in the marine industry. Features: Eliminate dangerous thread... -
![GROCO 1-1\/2" Bronze Tri-Flanged Ball Valve\/Seacock [FBV-1500]](https://cdn11.bigcommerce.com/s-hbdnd2os5x/images/stencil/590x590/products/12506/14925/74388XL__92993.1715742411.jpg?c=1 "GROCO 1-1\/2\" Bronze Tri-Flanged Ball Valve\/Seacock [FBV-1500]")
![GROCO 1-1\/2" Bronze Tri-Flanged Ball Valve\/Seacock [FBV-1500]](https://cdn11.bigcommerce.com/s-hbdnd2os5x/images/stencil/590x590/products/12506/14926/74388BXL__20761.1715742412.jpg?c=1 "GROCO 1-1\/2\" Bronze Tri-Flanged Ball Valve\/Seacock [FBV-1500]")
GROCO 1-1/2" Bronze Tri-Flanged Ball Valve/Seacock [FBV-1500]
GROCODEAN-74388$146.99RRP: $229.001-1/2" Bronze Tri-Flanged Ball Valve/SeacockFeatures:1-1/4" sizes and larger include one grease zerk fitting for lubrication (use only with the valve in the open position), and one drain plugThe... -
![GROCO 1-1\/2" Engine Flush Kit Adaptor [SSC-1500]](https://cdn11.bigcommerce.com/s-hbdnd2os5x/images/stencil/590x590/products/25954/34188/102158XL__56078.1715774607.jpg?c=1 "GROCO 1-1\/2\" Engine Flush Kit Adaptor [SSC-1500]")
GROCO 1-1/2" Engine Flush Kit Adaptor [SSC-1500]
GROCODEAN-102158$178.99RRP: $280.001-1/2" Engine Flush Kit & AdaptorThe ConceptA simple quarter-turn quick-release plug can add safety and flexibility to any water system. Add SSC to the top of any seacock to allow instant... -
![GROCO 1-1\/2" Hose Barb Stainless Straight Deck Drain [SCUS-1500]](https://cdn11.bigcommerce.com/s-hbdnd2os5x/images/stencil/590x590/products/13049/15718/75397XL__08857.1715743721.jpg?c=1 "GROCO 1-1\/2\" Hose Barb Stainless Straight Deck Drain [SCUS-1500]")
![GROCO 1-1\/2" Hose Barb Stainless Straight Deck Drain [SCUS-1500]](https://cdn11.bigcommerce.com/s-hbdnd2os5x/images/stencil/590x590/products/13049/15719/75397BXL__80945.1715743722.jpg?c=1 "GROCO 1-1\/2\" Hose Barb Stainless Straight Deck Drain [SCUS-1500]")
GROCO 1-1/2" Hose Barb Stainless Straight Deck Drain [SCUS-1500]
GROCODEAN-75397$99.99RRP: $156.001-1/2" Hose Barb Stainless Straight Deck Drain Features:Scuppers are installed flush with the deck and have a removable drain.#316 Stainless Steel Thru Deck Drain with Bronze Hose Connection... -
![GROCO 1-1\/2" NPS NPT Combo Bronze Thru-Hull Fitting w\/Nut [TH-1500-W]](https://cdn11.bigcommerce.com/s-hbdnd2os5x/images/stencil/590x590/products/12476/14886/74293XL__63206.1715742333.jpg?c=1 "GROCO 1-1\/2\" NPS NPT Combo Bronze Thru-Hull Fitting w\/Nut [TH-1500-W]")
GROCO 1-1/2" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut [TH-1500-W]
GROCODEAN-74293$49.99RRP: $78.001-1/2" NPS NPT Combo Bronze Thru-Hull Fitting with NutFeatures:NPSM / NPT combination threadC83600 BronzeSizes from 1/2" to 5"UL Listed 647BAvailable with (-W) or without nut (-L)BSPP and...