8400A
square
21" x 21" x 15"h
(recommended glass size)
36" x 36"
48" x 48"
36" diameter
48" diameter
8400B
rectangle
28" x 21" x 15"h
(recommended glass size)
60" x 30"
60" x 36"
Links:
[1] http://spectrumcollection.com/category/furniture/cocktail-tables
[2] http://spectrumcollection.com/category/company-distinction/spectrum-limited-collection