Size	A	B	C
3"	3 3/4"	16"	18"
4"	4 3/4"	17"	20"
5"	5 3/4"	18"	21 3/4"
6"	6 3/4"	19 1/2"	23 3/4"
7"	7 3/4"	20 1/2"	24"
8"	8 3/4"	21"	25 1/2"