Portland Stone blocks available in a variety of sizes as follows:
200mm x 200mm x 40mm
250mm x 250mm x 40mm
200mm x 200mm x 70mm
300mm x 300mm x 70mm
400mm x 200mm x 22mm
350mm x 240mm x 30mm
180mm x 180mm x 125mm
225mm x 200mm x 200mm
350mm x 175mm x 175mm