| code | size (mm) | price (£) | old code |
| 30-11 | 25 x 25 | 18.00 | MF21 |
| 30-12 | 38 x 38 | 18.00 | MF22 |
| 30-13 | 50 x 50 | 19.00 | MF23 |
| 30-14 | 75 x 75 | 22.00 | MF24 |
| 30-15 | 100 x 100 | 30.00 | MF25 |
| 30-16 | 150 x 150 | 40.00 | MF26 |
| 30-17 | 200 x 200 | 48.00 | MF27 |
| 30-18 | 250 x 250 | 54.00 | MF28 |
| 30-19 | 300 x 300 | 80.00 | MF29 |
| 30-20 | 450 x 450 | disc. | MF30 |
| 30-21 | 600 x 600 | disc. | MF31 |