We documented attic duct connections, the return opening and the roof-mounted exhaust termination during this inspection. Close views show deteriorated outer duct insulation and sealing materials, deposits around duct collars, and an exhaust connection at the roof that needs sealing assessment. These conditions guide the cleaning and restoration scope: assess the affected materials and connections, remove accessible contamination under controlled collection, and address damaged seals as needed. The selected photographs document observed conditions; repair or cleaning completion is not shown.