Features: Durable: The attic vent cover is equipped with a self-adhesive strip, which can be stuck more firmly without falling off, and can be used for a long-time. Easy to install: No tools are needed to install the fan cover of the whole house on the vent of the home; It can be fixed on the fan vent from outside without entering the attic. Application: The ceiling shutter sealing cover provides air sealing, reducing any air leakage. Reduce airflow throughout the year, improve comfort and save energy costs. Widely used: It is suitable for living room, bedroom, study, dining room, bedroom and other places, bringing lots of convenience. Package includes: 1x Aluminum Membrane Plate, 1x Self-adhesive Strip (5m/16.40ft), which is enough to meet your daily need. Specifications: Material: Aluminum Film Insulation Plate Type: 1/2 1 Size: Approx. 129x129cm/50.79x50.79inch 2 Size: Approx. 129x95cm/50.79x37.4inch Package Includes: 1x Aluminum Membrane Plate 1x Self-adhesive Strip (5m/16.40ft) note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.