The iconic Andersen "Elvstrom Bailers" are the global standard for racing dinghy and keelboat use.Designed by sailing legend Paul Elvstrom, Andersen Bailers are used in Stars, 420 and 470, Thistles, Snipes, Lightnings and many other traditional one-design classes. Their ingenious design uses venturi effect to produce suction and maximize water transfer.Simply open the bailer when the boat is sailing at adequate speed to drain. An anti-drainback flapper valve minimizes water intrusion when the boat slows down. Typically installed in pairs on port and starboard sides for optimum bailing on both tacks.Key FeaturesRecognized for decades as the industry standard for automatic bailersIn use on dinghies and keelboats worldwideIngenious design uses venturi effect to produce suction and maximize water transfer – simply open the bailer when the boat is sailing at adequate speed to drain. Close when stationary or at low speed.Available in outside mount and inside mount models.Inside mount models have a plastic grate to prevent lines being sucked out.Robust stainless steel construction provides long trouble free service life.Bailer and service kit installation instructions are availableEffective means of automatic bailing for dinghies and small one-design keelboatsInstall on port and starboard sides for optimum bailing on both tacksStainless steel constructionRubber gasketsBailer ModelMounting StyleOpening SizeFlange SizeCutout SizeNominal Hull ThicknessWeightMiniOutside0.395in² (255mm²)1/4" x 3 5/8" (56 x 92mm)1 1/2" x 2 11/16" (38 x 73mm)5/32" (4mm)3.5oz. (100g)Super MiniInside0.387 in² (250mm²)2 7/16" x 4 3/16" (61 x 106mm)1 5/8" x 3 3/8" (40 x 85mm)1/4" (7mm)6.2oz. (175g)Super MediumInside0.543in² (350mm²)2 11/16" x 5 5/16" (67 x 135mm)1 3/4" x 4 3/8" (43 x 110mm)1/4" (7mm)9.6oz. (275g)Super LargeOutside0.674in² (435mm²)3 3/16" x 5 9/16" (80 x 142mm)1 5/8" x 4 1/8" (41 x