• Ceiling Shutter Seal Cover provides an air seal reducing any air leakage.
• Works like a storm window for your whole house fan!
• Reduce drafts, improve comfort, and save energy costs all year-'round!
• Attic access is not required! Installs easily - TRIM IT TO FIT.
• Cover and seal the attic fan from the house side in minutes, no tools are needed!
• 1/4 foam core (white one side / foil other side
• includes 16ft of Hook and Loop Tape (VelkroTape)