Slabs: 2400up x 1200up x 16mm, 2400up x 1200up x 18mm, 2400up x 1200up x 20mm etc.
Tile:305 x 305 x 10mm, 305 x 610 x 10mm, 610 x 610 x 10mm etc.
Cut to size:300 x 300 x 20mm, 300 x 600 x 20mm, 600 x 600 x 20mm etc.
Stairs:1100-1500 x 300-330 x 20/30mm, 1100-1500 x 140-160 x 20mm etc.