attwoodmarine.com WATER SYSTEMS & VENTILATION 30 Stainless Steel Narrow Flange Thru-Hulls • Consistent exterior appearance throughout a range of barb sizes • Modern styling • Enhanced 316 Stainless Steel Alloy Caution: Stainless Steel Thru-Hull Connectors are designed for installation above the water line only. A Hose Size B Flange Dia. C Thread O.D. D Thread Length E Barb Length F Total Length Install. Hole Saw Size Thread NPSM Max Hull Thick. OEM Part # without Gasket Part # Thru-Hulls, Standard Length 5/8" I.D. 1-7/10" 1-3/10" 1-2/5" 1-1/8" 3" 1-5/16" 1" 7/8" 67555-1 — 3/4" I.D. 1-7/10" 1-3/10" 1-3/10" 1-1/4" 3" 1-5/16" 1" 3/4" 67554-1 — 1" I.D. 1-7/10" 1-3/10" 1-2/5" 1-1/8" 3" 1-5/16" 1" 7/8" 67556-1 — 1-1/8" I.D. 1-7/10" 1-3/10" 1-1/4" 1-1/8" 2-7/8" 1-5/16" 1" 3/4" 67557-1 — 1-1/2" I.D. 2-2/5" 1-7/8" 1-1/2" 1-3/5" 3-2/5" 2" 1-1/2" 1" 67551-1 — 2" I.D. 3.13" 2-3/8" 2.93" 2.04" 6.09" 2-7/16" 2" 2.70" 67552-1 — Thru-Hulls, Long Length 3/4" I.D. 1-7/10" 1-3/10" 1-1/2" 1-1/8" 4-1/4" 1-5/16" 1" — 67558-1 — 1-1/8" I.D. 1-7/10" 1-3/10" 1-1/2" 1-1/8" 4-1/4" 1-5/16" 1" — 67561-1 — 1-1/2" I.D. 2-2/5" 1-7/8" 1-1/2" 1-7/16" 4-15/16" 2" 1-1/2" — 67562-1 — Scupper Valve 1-1/2" I.D. 2-3/5" 1-7/8" 2" 2" 5-3/4" 2-1/8" 1-1/2" 2-3/4" 67553-1 — Stainless Steel Exhaust Thru-Hulls • Specifically designed for generator and engine exhaust applications • Features unique, modern styling that is both elegant and functional • Stainless steel scupper valve and an integrated stainless drip ring • Enhanced 316 Stainless Steel Alloy Caution: Stainless Thru-Hull Connectors are designed for installation above the water line only. A Hose Size B Flange Dia. C Thread O.D. D Thread Length E Barb Length F Total Length Install. Hole Saw Size Thread NPSM Max Hull Thick. OEM Part # without Gasket Part # 1-1/2" I.D. 3.18" 2.26" 1.6" 1.97" 4.58" 2.375" 2" – 11-3/4 1.125" 67581-1 — 2" I.D. 3.18" 2.26" 1.6" 2.23" 4.58" 2.375" 2" – 11-3/4 1.125" 67580-1 — 2-1/2" I.D. 4.60" 3.375" 1.8" 2.75" 5.8" 3.625" 3" – 8 1.5" 67583-1 — 3" I.D. 4.60" 3.375" 1.8" 3" 5.8" 3.625" 3" – 8 1.5" 67582-1 — 67556 67551 67553 67582 67555 67581 Scupper Valve Thru-Hull
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