Value Stacker 9100 - 98% Recyclable, since 1988! An attractively designed low-back stacker is very attractively priced! The sturdy 3/4" square tube 18-gauge frame has non-marring glides. The seat has 1 1/2" of high-density foam, with choice of durable expanded vinyl or patterned and solid color fabric upholstery materials. Eight color combinations in stock for ready shipment.