Frame: Round steel tubing 20/2 mm and 25/2 mm, black grey 7021; 2 fixed castors and 1 swivel castor; with ergonomic plastic handles. Suitable for the following models:

Stackable C-shaped chairs with crossbar: 7100 (max. 5 chairs), 7110 (max. 5 chairs)

4-leg chairs: 7097 (max. 6 chairs)