Window Channel Identification Needed

A quick learner from Punta Gorda, FL says:
30.75" in length from plastic tip to tip. Aluminum piece is 30" in length x 1/2" wide. Spring is 18". 9230 is stamped on the aluminum. Also need the two plastic end pieces shown in attached picture.
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Casey from SWISCO responded:

Hi there- thanks for posting! 

It looks like you have either our Series 380 or our Series 385 channel balance. The difference lies in the depth of the shoe. The series 385 balance has a 15-004 shoe, which is 1-3/32” deep while the Series 380 balance has a 15-005 shoe, which is 1” deep. Please reference the below photo to see exactly how to measure the depth of your shoe to determine which series you have.

Comparison of 15-004 and 15-005
Comparison of 15-004 and 15-005

In reference to the stamping on your balance, are you sure it doesn't read 2930 instead of 9230? I wasn't sure if that was a typo or not. Typically the stamp reads one digit below the length of your balance which you said was 30". Get back to me with that info if you could. 

Once you determine the correct series of your balance, you'll want to select the 30" length and if your stamp is 2930 then you will select the 2930 "option" at checkout. 

If you have any questions at all please don’t hesitate to reach out!

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