This clay 305mm hog back ridge from Marley comes in Aylesham Mixture to match perfectly with Marley’s Ashdowne tiles. Marley’s 305mm half round clay ridge is suitable for pitches between 30-45° and is compatible with the Marley RidgeFast ventilated dry ridge system. Why Clay Fittings All clay fittings can be used with clay plain tiles, keeping that authentic roof look. Clay plain tile ridge tiles are a key example that can be attached to clay fittings because of their security ridge straps. In turn, this means little need for long searches for a fitting that can match expectations. Clay roof fittings can also be decorative or plain depending on the purpose of your property. Product Specification Colour: Aylesham Mixture Width: 245mm Length: 305mm Height: 110mm Minimum Pitch: 35°