Attributes . Threshold Height . Values

0 in (8)   1/2 in (2)   2 3/4 in (2)   2 3/4 Inch (5)   3 3/4 in (2)   4 in (1)   4-1/10 in (1)   5 1/2 Inch (1)   5 1/8 in (1)   6 1/2 in (2)   6 in (5)   6-1/4 IN (1)   6-7/8 in (2)   7 in (1)