Dayton 16D556 12″ Weatherhood – Galvanized Steel, 20 GA, Exhaust/Supply Fan
Model / MPN: 16D556. Material: 20-gauge galvanized steel. Finish: Galvanized — resists corrosion and reduces maintenance. No fan or accessories unless pictured. ✅ Key Features. With wall collar: 17 5/8″ × 17 5/8″.