The Whale Gusher 30 Underdeck Kit AS3020 allows you to mount your Whale Gusher 30 (see related products) under the deck of you boat. Open the lid and pump when needed.FeaturesIdeal for confined spacesWhales most slim line designIncludes sleek Whale deck plate with coverThe Whale Gusher 30 Underdeck Kit AS3020 includes:4 x 6 mm nuts1 x alloy lid1 x deck plate1 x O-ring1 x lock nut 6 mm1 x gaiter1 x Whale Gusher 30 Underdeck Pump Bracket4 x screw 6 mm x 20 mm, 4 x screw 6 mm x 50 mm