- Give-Aways & Offers
- Monthly Must Do's
- DIY Project Ideas
- Step-by-Step Guides
- Inspirational Photo Galleries
I would recomend that you look into a vinyl clad, wood casement, replacement windows, with a nail flange that will be made to fit the opening that you have now!
They do make them with a 2 1/2" jamb width.
With insulated glass and muntins between them, you will be well served.