12" X 25' Non-insulated Flex Aluminum Dry Vent Ducting Ventilation

25ft of ducting. 12" Dia x 25ft Long Black Insulated Flexible Ducting Air Ventilation HVAC Hydro. 4" Inline Exhaust Fan W/ Leather Sleeve +4" x 33' Flexible Ducting Hose w/2Clamp. 12" Fitting. WARNING: California Proposition 65 requires California to publish a list of chemicals known to cause cancer, birth defects or other reproductive harm.