I would like to replace the channel balance springs in two of my Weather Shield Visions 1000's. They are stamped 33DH CL or GL. The glass is tempered so the active window weighs 30 lbs. They are single hung tilt. I would like to get the whole assembly with the knife lock attached. Since I installed them 20 years ago they have always heavy to lift open. Do I need a larger spring or something? Also I tried to take one spring out and there is not a place in the window channel where the knife lock shoe can be removed. Do I need to cut a notch in the vinyl to remove the knife lock shoe? If so where is the best place to cut the notch? See Attached photos. Thank you, I look forward to your reply. Thanks, Pat.
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Tom from SWISCO responded:
June 29, 2020
This looks like a match for our Series 751 balance. According to your old stamp, the length of the metal channel would be 34". Referring to the chart on our S751-34 store page, the 33TG stamp can hold up 29 thorugh 36 pounds, which should be perfect for your sash weight. |
