[Class : 19] Cement; Clinker; Fly Ash; All Cementitious Materials; Bricks; Building Blocks; Building Glass; Building Stone; Building Timber; Ceilings Not Of Metal; Doors; Windows, Door And Window Casings; Frames And Panels; Tiles; Building Materials; Non Metallic Pipes For Building; Asphalt, Pitch And Bitumen; Nonmetallic Transportable Buildings; Monuments, Not Of Metal.