FAVOMOTO White Vent Cover Seal, 50. 79 X 37. 40 Inch, Attic Whole House Fan Insulation Shutter Ceiling Return Air Door Window Cover

["Effective Insulation Cover Made of aluminum material provides reliable insulation to reduce air leakage and improve energy efficiency for attic fan and ceiling vents","Versatile Application Suitable for use on attic fans, ceiling vents, doors, and windows to prevent drafts and maintain consistent indoor temperature","Lightweight and Constructed with sturdy aluminum and finished in white this vent cover offers performance without compromising on flexibility or ease of use","User-Friendly Installation Features a hook and loop fastener design that allows quick, tool-free installation and easy removal for cleaning or adjustments","Fit This attic fan cover can be easily trimmed to fit a variety of vent sizes ensuring a secure seal for different attic fan and return vent openings"]