27in tilt window balancer

A quick learner from GARLAND TX says:
I need one of these in 27 inch and 2 21 inch.

The 21 inch has 21d stamped in it

The 27 inch has 27c cj stamped in it
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Casey from SWISCO responded:

Hello,

These look like our S795-21 with a 21D spring strength option and our S795-27 with a 27C stamp option. The only difference would be that ours uses a screw tab instead of a hook for installation. You may be able to install our 26-200 screw plug in the jamb if the cut out is square and matches the dimensions of the 26-200 . If not, let us know and we can discuss having these custom made for you. Thanks for posting!

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