Superfan Off Season Grille Inserts
Set of 4 Foam Inserts. Seal your Grilles during the Winter Months, Recommended for Cold Climates
These Inserts will prevent warm humid air from entering' your attic during colder winter months.
Installation Is Simple:
1. Remove The "Honeycomb" External Grille - It Snaps Out Of The Main Grille Housing Body |
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2. Inside The Grille - You Will See Butterfly Style Dampers. These Are Manually Operated - So Simply Pull Them Together To Close. |
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3. They Should Look Like This Closed. |
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4. Insert The Off-Season Grille Insert. |
Snap The "Honeycomb Grille" Back Into Place. You're Done!