Left hand Window spring

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Quick Learner from New Jersey

Jun 24, 2021 10:49 am

I need to order one of the attached photos for the left hand side of the window

I need one of these window spring assemblies left hand side

I need one left hand pivot latch

3 user uploaded images

6 Replies

Bob from SWISCO

Jun 29, 2021 10:37 am

Greetings. It looks like you have an older version of our 15-180 Pivot Shoe, which uses 15-182 and 15-181 Detent Clips. The compatible Coil Balances are our Series 190. Let me know if you have any other questions.

Quick Learner from New Jersey

Jun 29, 2021 3:52 pm

I cant tell if there is a number on the coil spring.

Is there a way to see which is right by providing the dimensions of the window?

Bob from SWISCO

Jun 30, 2021 9:38 am

Sometimes coil springs lack stamps, or the stamps aren't very clear to begin with. In this case, the best thing to do is to give us the exact weight of the window sash, perhaps from lowering it on a bathroom scale. Give us that exact weight, and I can calculate the spring weights you need.

Quick Learner from New Jersey

Jul 8, 2021 4:59 pm

Bob;

Since I am replacing the double planes of glass in the Sash I weighed the ne glass when I picked it up today and it weighs approximately 21 pounds, now the vinyl frame itself can't add that much weight maybe 2 or 3 pounds.

Will this help you recommend the correct spring?

Thanks

Chris

Tom from SWISCO

Jul 9, 2021 8:58 am

I can't really speak for how heavy your vinyl frame is, but the general formula you want to use is to divide the sash weight by how many springs support it. So if you have two springs on each side, you divide it by 4; if you have one spring on each side, you divide it by 2.

Assuming your sash is 24 pounds, which is just an estimation, and seeing as how you have two springs per side, then you'd want the 6 pound spring. That would be the S190-640.

In my opinion you should probably get the exact sash weight just to be safe. You'll be kicking yourself later if you guessed wrong, better to just get it right the first time.