Keller
BOTTOM
This 5/8" Spiral Balance
has a 3-5/8" rod
extension and is for a
Keller Window.

Often confused with our
200 Series (see below)
which has a shorter rod
extension
.
303 Series
These 5/8" Non-Tilt Spiral Balances are very similar and both use the same balance carrier(plastic end).The difference is in the
length of the spiral rod.(The rod extension)

While making sure that the spiral rod is flush with the mounting hole at the top of the balance, measure the metal portion
of the spiral rod extending past the end of the metal portion of the balance. This measurement is your rod extension.
Portalume
BOTTOM
This 5/8" Spiral Balance
200 Series