Before: Photos document dust and attached deposits on ductboard passages and connection surfaces. Process: We accessed supply openings for agitation cleaning and used vacuum collection to remove loosened buildup. We also worked at the attic plenum and connection seams. After: Comparison photos show exposed ductboard surfaces after source removal. The attic photos document resealed plenum access and seams with reinforced coating. Existing coloration and adhered marks remain distinct from removed loose dust.