Ogee Torus Full Replacement Fascia Board,
The Ogee torus extruded PVC molding on the lower edge creates a decorative feature to the lower edge. These boards have a 32 mm lower lip. 50 mm or 65 mm fixing nails should be used. However, as the picture shows screw fixings can be hidden behind the corner trims on box ends behind dry verges on the gable end and up behind the guttering. It takes extra time and effort to fix the boards with a hidden fix method but it's worth the extra effort. 16 mm and 10 mm edge trims can also be used to reduce the number of fixings that show.
There are also a number of ogee style guttering systems available to complement the design of these fascia boards.
Please note if you are buying corners or joiners for existing ogee boards that you do need to match with the original manufacturer of your board as the ogee design means that the corners and joiners will only fit a specific type of board.