Old Replacement Spiral Balances

A quick learner from Florida says:
Replacing window parts in structure build in 1970s- single hung, non-tilt windows. Need (8) 18" 3/8 Balances with white tips. Also need (2) 11" 3/8 Balances with white tips. These parts are not listed on your website. What should I do? Thanks! Tom

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Tom from SWISCO responded:
I see you were looking at our Series 400 spiral balance. Is that the Series you need in these lengths? If so, please confirm the weight of each window sash; both for the 18" balances and the 11" balances. Once we know that, we can work from there. The 11" balances will likely have to be custom made, so I will also need to know how many of those you need.
A landlord from Fort Pierce, Florida says:
Thanks Tom. Yes, your Series 400 Balances match the parts that I removed. Single hung windows are original in a duplex and all hardware must be replaced or I will have to change out all windows. I weighed the sashes as requested and here is the info: 23"= 12 lbs, 18"=10.5 lbs, 11"= 5 lbs. My needs are (4) 23" Balances, (16) 18" Balances, (4) 11" Balances. I have a question regarding the 11" Balances- These are for (2) obscure bathroom windows (37"X25") that need only to open a very little bit. Can I get by with the 12" Balances? If not, what is my cost for (4) custom 11" Balances?

Also have identified a close matching sash guide (18-166 Kinco). The height (1/2"), front (7/8") and rear (5/8") widths are the same. It is the overall length that is different (mine is 1 1/4" and Kinco is 1 1/2")- screw holes line up. Do you think that this will work? Thanks again for your help. Tom
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Tom from SWISCO responded:
Thank you for clarifying! I have good news, we were actually able to add our S400-11 as a standard balance option for you. It no longer needs to be custom made.

With that in mind, I would recommend a Red Tip for all three balance types. The length of the 18-166 won't matter as long as the holes match up with your old top sash guide.
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