90 Degree External Angle Clay Tile Fittings are specifically for use with vertical plain tiling. 90 Degree External Angle Clay Tile Fittings are available in left-hand and right-hand for a 90° angle, and are available in clay plain tile colours. 90 Degree External Angle Clay Tile Fittings are available in clay plain tile colours, left-hand and right-hand for 90° angle only.