Weight of window seems to be 28 or maybe 29. Original channel in window was stamped 3340. Should I order 3340 or go with 3350?
Casey from SWISCO responded:
May 6, 2020
If the 3340 option was supporting the window up to this point, we recommend replacing your balances with the same stamp option as the originals. Please let us know if you have any other questions.