[WSSix]

No, not entirely the same size. I'll need to bring in some frame pieces and make a better rough opening. The original window had a 1x4 frame built around it and it was secured on two sides, side and top, to the house. I'll close opening in with framing so I can seal the house better too. The house was built in 1969. It wouldn't surprise me if this window was original.

I'm sorry if I wasn't clear. I would make a 1x4 frame around the window and the area that protruded past the window is where I would secure the window to the frame. The window frame is maybe 2 inches thick. The frame also has voids inside so I would only go through the first layer of vinyl into the void. The tips of the screws wouldn't stick all the way through. At least, that's the idea. As I said, I'm worried the vinyl couldn't hold the torque.

I think I'm just going to go with screws in the area you suggested as I'm not finding any part that pops off the frame to hide the screws.

Thanks, Joe.