Perhaps you would prefer to have a nicer finish to your storage bay in the shape of a roof. This mould produces perfect accompanying ridged blocks which fit on the blocks made with the 160x40x40 mould. This mould has 4 holes along the bottom, so that it fits perfectly over the standard blocks.
In addition to a nicer finish to your walls, the roof model also has a practical function; used with storage boxes it creates a tapered ridge on internal walls, ensuring that raw and other materials slide neatly into the storage bay without becoming mixed. Furthermore no sand remains on the upper blocks.