Universal Angle Ridge Tiles can be dry fixed, mortar bedded only or mortar bedded and mechanically fixed. When ridges are mortar bedded & mechanically fixed, use clamping plates and woodscrews, complete with neoprene washers and foam grommets. A 6 mm diameter hole should be carefully drilled centrally in each ridge tile. Hi Pitch Universal Angle Ridge Tiles are available for use on steep roof pitches. They are available in colours Slate Grey, Terracotta and Tudor Brown. Hi Pitch Universal Angle Ridge Tiles can be either mortar bedded only or mortar bedded and mechanically fixed. A Block End Ridge Tile must be used at the verge when using the Ambi-Dry Verge System. Specifications: Length: 450mm