16.80

4′ 10″ 16.75 2.00 16.40L 4′ 11″ 16.88 2.00 16.80L 4′ 8″ 16.50 1.88 14.70L 4′ 9″ 16.65 1.94 15.50L +7

4'10 - 17.25 - 2 - 16.8 L 4'11 - 17.38 - 2.06 - 17.8 L 5'0 - 17.5 - 2.13 - 18.7 L 5'1 - 17.69 - 2.19 - 19.7 L +5

4'10 x 17 1/2 x 2 1/16 18.9L 4'6 x 17 1/4 x 2 16.8L 5'0 x 17 3/4 x 2 1/8 20.4L 5'2 x 18 x 2 1/8 21.4L +1

4'10" 16 3/4" 2" = 16.8L 4'11" 16 7/8" 2" = 17.2L 5'0" 17" 2 1/16" = 18L 5'1" 17 1/8" 2 1/16" = 18.6L +6