Frosty-Start-4559 t1_j1rpdse wrote on December 26, 2022 at 9:43 PM

Box in the ductwork so it isn’t exposed. Build a frame around the ductwork with lumber, then screw the dry wall to the frame and finish with seam tape, exterior corner drywall bead, and spackling compound, primer and paint. Do it right, don’t hack away at a piece of drywall to fit it around the ductwork, will still look bad.

OriginalSuggestion87 t1_j1so54m wrote on December 27, 2022 at 2:15 AM

Absolutely this. Depending on the geometry of the room and the rest of the walls, might even want to try an angled frame the full length of the wall with an undercut piece of drywall, mimicking a slanted attic ceiling if you don't want a random "box" in a corner.