Soft Close Household Style Seat & Cover - WhiteFeatures:. Toilet seat and lid close slowly to prevent hard slamming. Special stopper locks seat in place to prevent seat from sliding and potentially breaking hinges. Fits all Raritan manual and electric toilets, except Atlantes elongated models. Fits most other brands of marine compact and household style bowls. Seat and lid made of high-density fiberboard (HDF) with durable plastic hinges. Supplied with corrosion-resistant stainless steel fasteners. Fits most household size bowls - 14" W x 15-7/16" D