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Diagram of item goes here.

Size A B X Y
7" 4 3/4" 4 3/4" 10 1/2" 10 1/2"
8" 4 3/4" 4 3/4" 10 1/4" 10 1/4"
10" 5 1/2" 5 3/4" -- --
12" 6 1/8" 6 1/4" 13 7/8" 14"
14" 6 1/2" 6 7/8" 14 7/8" 15 1/4"
16" 7 1/4" 7 3/8" 16 1/2" 16 1/2"
18" 9" 8 1/2" 20 1/8" 21 7/8"
20" 9" 8 3/8" 20 1/4" 21 3/4"
22" 8 1/2" 9 3/4" 20 3/8" 21 5/8"
24" 9 1/2" 9 3/4" 21" 21 7/8"
26" 10 1/4" 10 1/4" 21 1/2" 22 3/4"
28" 9 3/4" 10" 21 1/2" 22 3/4"
30" 9 3/4" 10" 23 3/4" 24"