Cover for hole after removing wall-mounted air return?
Redesigned HVAC and removed an old wall return grille, leaving a large rectangular opening. Want a cover that looks finished and allows future reuse if needed. Any suggestions?
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Old return openings are big and hard to ignore. A sturdy cover panel is much cleaner than drywalling it shut permanently. I choose reinforced plastic ones that span the full width without bowing. The one I installed has a flat door and strong latches that keep it closed tight against airflow pressure. Painted the same eggshell as the wall it blends right in. I fitted a durable wall hole cover (20×30) over the opening and it's held up well with no rattling. Add blocking behind if you want extra rigidity.