Dryer Vents

4" x 25' Aluminum Semi-Rigid Flexible Dryer Vent Duct 4″ DIAMETER. 25′ LENGTH CLASS O FIRE HAZARD - UL Listed CLASSIFICATION. MAX VELOCITY= 4000 FPM, MAX RATED PRESSURE= 4″ WG +VE/-VE, OPERATING TEMPERATURE= -100 DEGREES TO +400...