Sp Furo 13wmv Top -

Another angle: sometimes companies use alphanumeric codes that aren't immediately obvious at first glance. Maybe "Furo 13WMV Top" is part of a product line with specific technical specs that the numbers denote. For example, 13 could be a generation or model year, "WMV" might relate to a series (Water Management Version), and "Top" the highest in the line.