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Marine Plumbing & Ventilation - Thru-Hull Fittings

Rugged thru-hull fittings for secure water intake and discharge connections.

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  • GROCO Bronze Hose Barb Thru-Hull Fitting - 1" [HTH-1000]
    GROCO
    GROCO Bronze Hose Barb Thru-Hull Fitting - 1" [HTH-1000]
    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: 0.7 lbs UPC: 742985005228
    $34.99
    $34.99
  • GROCO 1-1/4" Stainless Steel Extra Long Thru-Hull Fitting w/Nut [THXL-1250-WS]
    GROCO
    GROCO 1-1/4" Stainless Steel Extra Long Thru-Hull Fitting w/Nut [THXL-1250-WS]
    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 Dimensions: 5"H x 6"W x 7"L WT: 1.8 lbs UPC: 742985174894
    $60.99
    $78.00
    $60.99
  • GROCO Stainless Steel Hose Barb Thru-Hull Fitting - 3/4" [HTH-750-S]
    GROCO
    GROCO Stainless Steel Hose Barb Thru-Hull Fitting - 3/4" [HTH-750-S]
    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 Dimensions: 3"H x 3"W x 4"L WT: 0.5 lbs UPC: 742985138988
    $28.99
    $28.99
  • GROCO 1" 90 Degree Hose Thru-Hull Fitting [HTHC-1000-S]
    GROCO
    GROCO 1" 90 Degree Hose Thru-Hull Fitting [HTHC-1000-S]
    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 Dimensions: 5"H x 5"W x 5"L WT: 1.2 lbs UPC: 742985139299
    $52.99
    $68.00
    $52.99
  • GROCO Stainless Steel Hose Barb Thru-Hull Fitting - 1-1/8" [HTH-1125-S]
    GROCO
    GROCO Stainless Steel Hose Barb Thru-Hull Fitting - 1-1/8" [HTH-1125-S]
    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 Dimensions: 3"H x 3"W x 5"L WT: 0.7 lbs UPC: 742985138995
    $32.99
    $32.99
  • GROCO Stainless Steel Hose Barb Thru-Hull Fitting - 1-1/2" [HTH-1500-S]
    GROCO
    GROCO Stainless Steel Hose Barb Thru-Hull Fitting - 1-1/2" [HTH-1500-S]
    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 Dimensions: 5"H x 5"W x 5"L WT: 1.25 lbs UPC: 742985139015
    $65.99
    $65.99
  • GROCO Stainless Steel Hose Barb Thru-Hull Fitting - 1/2" [HTH-500-S]
    GROCO
    GROCO Stainless Steel Hose Barb Thru-Hull Fitting - 1/2" [HTH-500-S]
    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 Dimensions: 3"H x 3"W x 4"L WT: 0.45 lbs UPC: 742985142121
    $30.99
    $30.99
  • GROCO Bronze Hose Barb Thru-Hull Fitting - 5/8" [HTH-625]
    GROCO
    GROCO Bronze Hose Barb Thru-Hull Fitting - 5/8" [HTH-625]
    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 WT: 0.5 lbs UPC: 742985062269
    $22.99
    $22.99
  • GROCO Stainless Steel Hose Barb Thru-Hull Fitting - 1-1/4" [HTH-1250-S]
    GROCO
    GROCO Stainless Steel Hose Barb Thru-Hull Fitting - 1-1/4" [HTH-1250-S]
    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 Dimensions: 3"H x 3"W x 5"L WT: 1 lbs UPC: 742985139008
    $53.99
    $53.99
  • GROCO 1" Bronze Extra Long Thru-Hull Fitting w/Nut [THXL-1000-W]
    GROCO
    GROCO 1" Bronze Extra Long Thru-Hull Fitting w/Nut [THXL-1000-W]
    1" Bronze Extra Long Thru-Hull Fitting w/Nut Features: Extra long NPSM / NPT combination thread C83600 Bronze Specifications: Hose Size: 1" Material: Bronze Box Dimensions: 3"H x 3"W x 6"L WT: 1 lbs UPC: 742985141759
    $40.99
    $40.99
  • GROCO Bronze Hose Barb Thru-Hull Fitting - 2" [HTH-2000]
    GROCO
    GROCO Bronze Hose Barb Thru-Hull Fitting - 2" [HTH-2000]
    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: 1.65 lbs UPC: 742985097421
    $71.99
    $71.99
  • GROCO 3/4" Stainless Steel Extra Long Thru-Hull Fitting w/Nut [THXL-750-WS]
    GROCO
    GROCO 3/4" Stainless Steel Extra Long Thru-Hull Fitting w/Nut [THXL-750-WS]
    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 Dimensions: 3"H x 3"W x 8"L WT: 0.75 lbs UPC: 742985175167
    $45.99
    $59.00
    $45.99
  • GROCO 1-1/4" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-1250-WS]
    GROCO
    GROCO 1-1/4" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-1250-WS]
    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 available Specifications: Hose Size: 1-1/4" Material: Stainless Steel Box Dimensions: 5"H x 5"W x...
    $52.99
    $52.99
  • Perko Thru-Hull Scupper f/Mounting Through Transom [0323DP]
    Perko
    Perko Thru-Hull Scupper f/Mounting Through Transom [0323DP]
    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" Max. Hole Thickness: 2-1/8" O.D. Flange: 2-7/8" Specifications: Hose Size: 1-1/2" Material: Plastic Box Dimensions: 4"H x 6"W x...
    $43.99
    $43.99
  • Perko 1-1/8" Thru-Hull Fitting f/ Hose Chrome Plated Bronze Made in the USA [035006ADPC]
    Perko
    Perko 1-1/8" Thru-Hull Fitting f/ Hose Chrome Plated Bronze Made in the USA [035006ADPC]
    Perko 1-1/8" Thru-Hull Connection f/ use with Hose Chrome Plated BronzeFlange is machined to fit and grooved to retain bedding compound neck isthreaded to approximately 3/16 inch from flange. Cast bronze, plain or chromed brass Regular or short length versons Regular Length- Fits maximum...
    $79.99
    $79.99
  • Perko 1" Thru-Hull Fitting w/Pipe Thread Bronze MADE IN THE USA [0322DP6PLB]
    Perko
    Perko 1" Thru-Hull Fitting w/Pipe Thread Bronze MADE IN THE USA [0322DP6PLB]
    Perko 1" 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 from flange.Cast bronze.Technical Information: Pipe Size Inches: 1 Mouting Hole Diameter Inches: 1-5/16 Maximum Hull Thickness Inches: 1-7/8 O.D....
    $47.99
    $47.99
  • Perko 1-1/8" Thru-Hull Fitting f/ Hose Bronze Made in the USA [035006ADPP]
    Perko
    Perko 1-1/8" Thru-Hull Fitting f/ Hose Bronze Made in the USA [035006ADPP]
    Perko 1-1/8" Thru-Hull Connection f/ use with Hose BronzeFlange is machined to fit and grooved to retain bedding compound neck is threaded to approximately 3/16 inch from flange. Cast bronze, plain or chromed brass Regular or short length versons Regular Length- Fits maximum hull...
    $64.99
    $64.99
  • Perko 1-1/4" Thru-Hull Fitting f/Hose Bronze MADE IN THE USA [0350007DPP]
    Perko
    Perko 1-1/4" Thru-Hull Fitting f/Hose Bronze MADE IN THE USA [0350007DPP]
    Perko 1-1/4" 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 or chromed brass Regular or short length versions Regular Length- Fits maximum hull thickness...
    $94.99
    $94.99
  • Perko 1-1/2" Thru-Hull Fitting f/ Hose Bronze Made in the USA [0350008DPP]
    Perko
    Perko 1-1/2" Thru-Hull Fitting f/ Hose Bronze Made in the USA [0350008DPP]
    Perko 1-1/2" 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 or chromed brass Regular or short length versons Regular Length- Fits maximum hull thickness...
    $115.99
    $115.99
  • Perko 1-1/2" Thru-Hull Fitting f/Hose Plastic MADE IN THE USA [0328DP8]
    Perko
    Perko 1-1/2" Thru-Hull Fitting f/Hose Plastic MADE IN THE USA [0328DP8]
    Perko 1-1/2" Thru-Hull Fitting for Hose Plastic Molded White Plastic Broad FlangeTechnical Information: Hose Size Inches: 1-1/2 Mounting Hole Diameter Inches: 1-7/8 Maximum Hull Thickness Inches: 1-7/8 O.D. Flange Inches: 3 MADE IN THE USA Specifications: Hose Size: 1-1/2" Material: Plastic Box Dimensions: 2"H...
    $8.99
    $8.99

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