National Diversified Sales Flo-Well FWFF67 Porous Filter Fabric Wrap - NDS is the industry's primary source for solutions in Storm Water Management, Efficient Landscape Irrigation, and Flow Management Valves for the residential and commercial markets. We remain dedicated to manufacturing products that feature superior performance, durability, are easy to install and widely available. These features have made NDS a trusted and knowledgeable partner in water management solutions both domestically and internationally.