Pedestal leg design with the option of casters for added mobility. MODEL SHAPE HEIGHT DESK 1910 Rectangle 22''-29'' Adj 24''x48'' 1920 Rectangle 22''-29'' Adj 30''x48'' 1930 Rectangle 22''-29'' Adj 30''x60'' 1935 Rectangle 22''-29'' Adj 24''x60'' 1940 Rectangle 22''-29'' Adj 36''x60'' 1946 Rectangle 22''-29'' Adj 24''x72'' 1950 Rectangle 22''-29'' Adj 30''x72'' 1960 Rectangle 22''-29'' Adj 36''x72'' 1965 Rectangle 22''-29'' Adj 36''x96'' 1970 Rectangle 22''-29'' Adj 42''x60'' 1986 Round 22''-29'' Adj 60'' 1990 Trapezoid 22''-29'' Adj 30''x60''OPTIONSPermaTuff EdgePermaTuff Comfort EdgePlywood Core3'' Casters
