Plastic that is screwed at the top of the moving pane that holds the spring down

A handy person from Miami says:
October 2, 2017
Need to order the 2 white plastic that is attached with a screw at the top corner of the moving glass pane that maintains the spring in position.

Top sash guide
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Casey from SWISCO responded:
October 6, 2017
Thank you for choosing SWISCO.com. It looks like you have Series 377 balances for a Pan Am window. They are normally used with our 18-042 top sash guide.
Top Sash Guide Pair, Pan Am
Top Sash Guide Pair, Pan Am
18-042
$1.97
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