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Dramatic-Ad7828 t1_j2mmggs wrote

It may be stamped into the corner of the glass or possibly on the window lock.

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FarStudy3278 OP t1_j2mmm2z wrote

I'll have to go back and look when I return home from work. Thanks.

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Dramatic-Ad7828 t1_j2mmoqe wrote

Around here you could see Harvey, Anderson, Pella there are probably some other brands I'm unaware of.

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