Carpet friendly sled based design. MODEL SHAPE HEIGHT 7008 - Stack Chair A+ 18.5'' 7007 - Stack Chair A 17.5'' 7005 - Stack Chair B 15.5'' 7003 - Stack Chair C 13.5'' 7048 - With Ganging Device A+ 18.5'' 7047 - With Ganging Device A 17.5'' 7058 - With Bookrack A+ 18.5'' 7057 - With Bookrack A 17.5''OPTIONSSeat and Back Pads (A+ and A sizes only)Nylon Glides
