Reply #23: Uh-oh...

[jmowreader]

Gogi, go to one of these windows that you installed and look at the frames, fairly close to the top and to the bottom. You should see a little hole in the frame on each side, maybe an inch or two down from the bottom and an inch or two from the top--plus one right in the middle.

That's where the drywall screws that actually hold the window in place go.

You put a shim between the unit and the rough opening to keep the screw from racking the window, and run a 1-5/8" drywall screw through the hole. You'll want to remove the casing and this piece of trim (which is mainly there to keep the wind from whipping through the crack between the window and the rest of the house), remove the sashes to make life easier on yourself, stick a shim in the gap between the window and the wall behind each screwhole, use a level to be sure the frame leg is straight up and down after inserting the shims, and run the screws in. Then put the top sash back in and run it up and down to be sure it operates smoothly before reinstalling the bottom sash.

--jmowreader, the party pooper