| code | size (mm) | price (£) | old code |
| 30-51 | 25 x 25 | 18.00 | MF21 |
| 30-52 | 38 x 38 | 18.00 | MF22 |
| 30-53 | 50 x 50 | 19.00 | MF23 |
| 30-54 | 75 x 75 | 22.00 | MF24 |
| 30-55 | 100 x 100 | 30.00 | MF25 |
| 30-56 | 150 x 150 | 40.00 | MF26 |
| 30-57 | 200 x 200 | 48.00 | MF27 |
| 30-58 | 250 x 250 | 54.00 | MF28 |
| 30-59 | 300 x 300 | 80.00 | MF29 |
| 30-60 | 450 x 450 | p.o.a. | MF30 |
| 30-61 | 600 x 600 | p.o.a. | MF31 |