Vintage Dark Grey Plastic Chair with Metal Legs and Casters. $156 Each These plastic chairs are easy to move around and can serve as a desk chair, waiting room, or even as additional seats for guests. They are stackable and their plastic seat and back are easy to clean and resistant to the elements. A practical addition to your home or office. They measure 20.5 inch wide, by 22 inch deep and 33 inch high. Seat itself is 18 inch wide, by 16.5 inch deep and 18 inch high A total of 15 are avaiable.