Anyone ever deal with a basement wall window from “Plycor” or something similar.  I need to replace some in a customer’s house.  The house is a modular of some kind about 30 yrs old.  The windows are metal sliders in a plastic frame that was poured into the concrete.

I thought about tearing everything out and starting new with treated, etc, but the opening only measures 12H x 24W now.  It would be super to find replacements to pop back in to the original plactic frames.

I believe the Plycor is from Elkcart Lake, Indiana.  Maybe that rings a bell to someone.