broken parts or missing...

A quick learner from Knoxville Tennessee says:
My thermo-break windows are at least 25 years old...I'd like new spring lift parts...it's the nylon parts missing or broken...if I could just repair the lifts, that would be great...the lifts are 26" long...the top and bottom pieces on some lifts are bad and the part on the windows ( pic) are broken...please advise...Alex
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Tom from SWISCO responded:

Based on your photos, you have either our Series 390 or Series 351. The only difference between them is the size of the bottom fitting, which is indicated on their respective store pages. You'll need to measure your bottom fitting to confirm which one is the better match.

I'm not sure about the top sash guide. Can you remove one and show me a couple more pictures? I'd like to see it from the front and side. Think of it like a mug shot.

Comparison of the S351 and S390 balance shoes.
Comparison of the S351 and S390 balance shoes.
A quick learner from Knoxville Tennessee says:
I measured the bottom part on several channels and it is always 1 1/16" which I'm guessing is 1 1/8" worn down after 25 years of use...The 390 x 26" looks right...I will need 12 each ( 6 windows)...Should I order 2 for now to make sure they work? Alex
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Tom from SWISCO responded:

Thanks, Alex. You're correct, yours was likely 1-1/8" and wore down over time. You can buy two to test out, if you wish. You can also see our return policy here, if you'd like peace of mind.

A quick learner from Knoxville Tennessee says:
if you can tell from the picture, the nylon guide on the top of the sash, several are missing or broken...
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Tom from SWISCO responded:

Yep, I know you need a new top sash guide. I still would like to see it out of the window so we can see it from both the front and side. I don't recognize what you have and I will need to track down a suitable substitute.

A quick learner from Knoxville Tennessee says:
window guide thingy...
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Tom from SWISCO responded:

Thank you! This is a huge help. Looking at that side profile, I feel confident that our 18-182 is a suitable match. The bad news is that it's not made in white, but I believe it should still work for you otherwise.

A quick learner from Knoxville Tennessee says:
I want to order 4each - 25" S390 channels w/ 1 1/8" bottom parts...after reading more I measured just the channel which is 25"...I need 8each 18-182 window sash pieces, black is fine...I'm not sure what options to request for ordering the channels...please advise
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Tom from SWISCO responded:

Great, I'm glad you decided on what you need. All orders can be placed on our site at your convenience.

The channel balance option is determined by the stamp printed on your original. If your balance lacks a stamp, or if you don't know how to interpret it, then you can weigh your sash on a scale and refer to the weight chart we show on that balance's store page.

How to Repair a Jammed Window
How to Repair a Jammed Window
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How to Replace a Top Sash Guide [1080p]
How to Replace a Top Sash Guide [1080p]
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