The windows are quite old, may be from between 1960s and 1970s. Tried to take it out, but it breaks and does not come out in full width. Heights seems to be 1/8", and the metal frame where it slides-in, the width of that is 5/16" and center where actually wool comes out is 1/8".
Since I have old aged mother living with me, I shall really appreciate your urgent help in identifying this please.
Thank you!
Sushil
