The Door Blanket protects temperature-controlled items and finished products from spoilage or irreparable damage that occurs when powered doors on coolers or freezers unexpectedly shut down. It is designed to eliminate the exchange of air at the door opening when an air or automated door won't close for any reason, including loss of electrical power or other maintenance-related issue. The product features industrial fabric that surrounds multiple layers of recyclable, anti-microbial polyester batting. Custom-designed to fit each door opening, the product comes in a portable storage bag. Users can select from a variety of fabric colors.