BASE06 BASE08 And Up Standard Base A B C Fits Column Size BASE06 7" 4" 9 7/8" 6" Column BASE08 11 3/4" 2 7/8" 16 5/8" 8" Column BASE10 12 3/4" 3 1/4" 18" 10" Column BASE12 15" 3 1/4" 21 3/16" 12" Column BASE14 17" 3 1/4" 23 3/4" 14" Column