Plain Angle Ridge Tiles are available in three angles in concrete (85°, 120° and 140°).Colours available are Slate Grey, Terracotta, Tudor Brown and Black.They can be either mortar bedded only or mortar bedded and mechanically fixed. When mortar bedding & mechanically fixing, use Clamping Plates and woodscrews, complete with neoprene washers and foam grommets. 6mm diameter holes should be carefully drilled 30mm in from each end of each ridge tile. Coverage Length: 450mm