Features: Ensure a healthy growing environment for your plant with the grow tent vent cover filter. Made of highqualitys fabric, this durable vent cover is adjustable and foldable for easy storage. Perfect for gardening enthusiasts who want to maintain a controlled environment for theircrops. Use it in your indoor or outdoor space to promote better airflows and create an optimal growing environment. Keep your grow tent freshs and clean with this reusable and washable vent cover filter. Specifications: Material:Net S Size:Approx.10x13.5cm/3.93x5.31inch Weight:32g M Size:Approx.15x13.5cm/5.9x5.31inch Weight:50g L Size:Approx.20x16.5cm/7.87x6.49inch Weight:68g Color:Black Package Includes: 2pcs Grow Tent Vent Cover note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.