One of key our principles is to offer a good selection of hardware and rigging options with high quality technical information to give you the details you need to make informed product choices. So, let’s take this recent customer question and see where it leads us when we compare the options from the Karver, Facnor and Ronstan furler ranges. Karver is one of the best known furler brands and has a reputation for lightweight performance and is in use on a lot of grand prix race boats as well as cruising boats. The smallest top-down unit they supply is the KSF1 with a Safe Working Load (SWL) of 1500kg which is definitely more than we need on our 25ft asymmetric. Key stats: Facnor does have a smaller unit, the FX+900 with a SWL of 900kg. Facnor has a philosophy on top-down furling where they sacrifice some weight but use top-down adaptors on standard bottom-up furling drums. This allows you to use the same drum for multiple sails reagrdless of whether they are top-down or bottom-up. Unfortunately, for some reason, they do not have a top-down adaptor for the FX+900 and only start at the next size up, the FX+1500 with a SWL of 1500kg – which is the equivalent unit to the K...