S390-34 Balance with a 33 16L BSI TA stamp

Question

Hi,

I have three large windows with what appear to be S 390-34 spring balances. The coding on the old balances is 33 16L, followed by what appears to be BSI TA.

These are very heavy windows--multi-pane hurricane rated vinyl windows with each sash about 50" wide by 36+" tall.

Each sash weighs 55 pounds, much heavier than the standard options for the S390-34 on the website.

The current spring arrangement is a spring-within-spring.

I see from other enquiries that you need to custom-make these balances. Since two have given up the ghost, I want to replace all six channel balances on the three windows. Could you please give me a price quote and delivery time?

I can send photos if you need them, but this may be enough info for you.

Thanks.

Tom · Accepted Answer

Thanks for reaching out to us! This is very likely enough information, yes, though truth be told I always like to get photos in these circumstances just to be safe. Custom balances cannot be returned for a refund so I don't like to take chances. It's ultimately up to you.

Otherwise, please give me a little time to look into that 33 16L stamp, or at the very least at what options are available for a sash as heavy as yours. I'll get back to you ASAP once I have more information one way or another.