Wall Cap for Exhaust Fans

Broan 639 Wall Cap for 3-1/4" x 10" Duct for Range Hoods and Bath Ventilation Fans

AC Infinity Flexible 4-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 25-Feet Long for Heating Cooling Ventilation and Exhaust

Panasonic FV-08-11VF5 WhisperFitEZ Fan 80 or 110 CFM

Broan-Nutone LP80 LoProfile Ventilation Fan, Wall- or Ceiling-Mount Exhaust Fan for Bathroom and Home, 1.0 Sones, 80 CFM

Builder's Best 012635 Roof Vent Cap, Black Galvanized Metal, with 4-inch diameter collar

Deflecto Dryer Vent, Wide Mouth Galvanized Vent Hood, 4", Silver (GVH4NR)

Deflecto Non Insulated Metallic Duct, Flexible, 3" x 25', Silver (FL0325/6)

Broan Steel Roof Cap for 3-1/4x 10"up to 8" Round Duct

Broan 641 Wall Cap for 6" Round Duct for Range Hoods and Bath Ventilation Fans