They are made of wood. length : 75 cm, width : 40 cm.
They are available in 3 heights : 33, 48 and 63 cm. They can be put on top of each other and in putting modules of different heights on top of each other you can get modules of the same level. All four sides of the bases have holes allowing them to be connected to other elements of the system by locking or fixing.
Contact : Robert MAJEAU