Snap-Fan Exhaust Shutter System - 12" Snap-Fan-Exhaust Shutter

The Snap-Fan Exhaust Shutter by Fogco is a passive, gravity-operated shutter that protects your ventilation opening from weather, pests, and backdrafts. Constructed entirely from corrosion-resistant aluminum, it requires no electricity and opens automatically with fan airflow.

Key Features

• Passive Operation: Precision-balanced aluminum louvers open with fan airflow and close by gravity -- no electricity required
• Weather & Pest Protection: Blocks rain, snow, wind, insects, birds, and rodents when the fan is off
• Backdraft Prevention: Stops unwanted air from flowing back into the space, maintaining stable indoor temperatures
• Corrosion-Resistant Aluminum: Lightweight, rust-proof construction built for humid and outdoor environments
• Models Available: 12", 16", 20", and 24" sizes to match Fogco Snap-Fans

Applications

• Greenhouses & High Tunnels: Prevent heat loss at night and keep pests out of controlled environments
• Attics & Crawlspaces: Seal solar attic fan openings to prevent cold winter air infiltration
• Barns & Chicken Coops: Keep animal enclosures warmer and draft-free during colder periods
• Sheds, Garages & Off-Grid Buildings: Enhance energy efficiency by sealing a key point of air leakage