Frame of welded, powder-coated or chrome-plated round steel tube. Chairs and armchairs are available. Seat shell of beech plywood with anti-slip varnish and concealed seat attachments. Optional firm all-round upholstery. Models without backrest upholstery have grip hole. Features and options. Glides for hard or soft floors. When using linking (RV), all models can be combined. Optional place (31148) and row (31149) numbering respectively and a writing support which is available in left and right hand versions.