On Aug 11, 9:53 am, Andrew Sarangan wrote:
Is it possible to cut out a window on a regular garage door? I need to
install a fresh-air intake grille for an exhaust fan, and the garage
door appears to be the best location.

I am not sure what the construction material is, but the outer skins
appear to be somewhat flexible, so I am thinking it is a thin steel
skin with an open cavity inside (or foam).

Any suggestions?

We added several windows to a door that is similar in construction to
yours. I used a cut off wheel on a 4" grinder to do most of the
cutting, and finished off with a sawzall. Drilling 4 holes at the
corners will really help to "keep you honest'.

JK