Rugged Stainless Construction. Cast from certified enhanced #316 Stainless Steel allow for strength and lifetime corrosion-resistance. We polish all visible areas to a mirror finish, then each part through a passivation for additional protection. Thick steel sidewalls withstand continual stress and hose flexing.Solid Silicone Gasket. Gasket is dimensionally stable--will not deteriorate or shrink over time. Excellent resistance to UV & weather-aging. Watertight, fool-proof, one-piece seal. Eliminates the need to form and apply sealant or caulk. Guaranteed good looks because the perfect fit and concealment is built in the gasket. A Hose SizeB Flange Dia.C Thread O.D.D Thread LengthE Barb LengthF Total LengthInstall. Hole Saw SizeThread NPSM Max Hull Thick. 1-1/4" I.D.2-3/4" 1-5/8" 2-1/2" 1-1/4" 4-1/4" 1-3/4"1-1/4"1-7/8"
Attwood Stainless Steel Straight Thru-Hulls Barbed 1-1/4"