Effective Seal & Insulation - This attic fan cover an be used all year round, protects against heat loss in winter and excessive heating in summer. This helps maintain a comfortable temperature at home. Large Size Fan Cover - Whole house fan insulation cover measures 19.5 x 118 inches. The size is large enough to meet the ventilation and insulation needs of the entire house, and it is easy to cut to fit air vents of various sizes. Insulation Material - The attic insulation cover is consists of surface layer, foam insulation material and aluminum foil layer with excellent sealing helps to form a barrier that effectively blocks heat loss and keep your room warm during winter and block the loss of cold air during summer. Easy Installation - Our attic ceiling insulation shutter cover is easy to install and use. The aluminum foil layer is comes with self-adhesive. Just tear off the transparent film and it can be stick onto the air vent. You can also choose to stick it with additional tape. (Tape Not Included） Wide Applications - The attic insulation cover is waterproof and provide year-long insulation, suitable for living room, bedroom, study, dining room, bedroom and other places. widely used in attic fans, whole house attic ceiling shutters, attic vents, etc.
