Replaced entire dryer run with 4” hard duct and a new exterior vent. All ductwork is securely installed and all seams are sealed with the proper heat resistant aluminum tape. Cleaned out the lint trap and tested dryer. The dryer is functioning properly at this time and exhaust flow is optimal. We highly recommend have a dryer vent cleaning performed every one to 2 years due to the length of the run. Thank you for your business!