Number on part is 1710 Aluminum length is 18 inches With the "shoe" it is 18 3/8 inches Width of aluminum about 9/16 of an inch
One tab on opposite end broke off. The springs are needed as well but are not in the pictures.
Paul from SWISCO responded:
July 16, 2018
Hello, and thanks for reaching out to us. Could our S370-18 channel balance with a 1710 option be the one you are looking for? Look it over and see what you think.