Product review (5 stars): Worked perfectly for attic ventilation
Nice strong lining. Used it in attic to vent out hot attic air with a Panasonic blower. Two 4" runs are being used to collect hot air from the hips of the roof. They are then combined using a wye into this 6" hose. Then through the fan and then out through this 6" again to a roof vent. Worked perfectly. Note that this hose is not insulated, so you can head the air flow through the hose, along with the fan noise. But with the fan hanged on the roof in the attic, nothing could be heard in the house.