1. Waterproof Oxford ClothGrow tent vent cover is made of waterproof Oxford cloth with silver waterproof layer, which has good waterproof and dustproof, lightweight and durable that can be used for a long time 2. Elastic Band DesignFan vent duct filter is equipped with an elasticated band and fixing buckle to adjust the opening size according to the size of the vent, making it more securely fitted without falling off to effectively protect the vent 3. Fine GridAir ducting pipe cover has a surface with many fine holes, which effectively prevents debris, leaves, birds, rodents, and so on from entering the shed causing damage to the plants without obstructing the air circulation and exchange. The twopiece set is easy to change and clean 4. Quick CoverageGrow tent vent cover has an adjustable drawstring at the bottom of the cover that can be tightened to secure the cover in place after it has been placed over the vent, so that cover will not be easily blown away by the wind, making it easy to install and remove, as well as being stable and durable