Product description Keep your grow tent clean and ventilated — two adjustable vent covers designed to fit common duct openings and prevent dust, debris and spiders from entering. Key benefits Clean grow environment: The fine mesh blocks dust and spiders while still allowing airflow, helping protect plants and equipment. Secure, adjustable fit: Elastic band with a fixed buckle lets you tighten the cover around duct or vent openings to prevent slipping or falling off. Ready to rotate and clean: Sold as a pack of two so you can swap covers for cleaning or replacement without downtime. Durable and water-resistant: Outer fabric is waterproof Oxford cloth; the center mesh is odorless and the nylon elastic rope provides long-lasting stretch and hold. What’s included and sizes Two vent filter net covers. Available diameters: 10.2 cm, 15.2 cm, or 20.3 cm — choose the size that matches your vent or duct. Features and performance Mesh design: Balances ventilation and filtration — allows airflow for fans and vents while keeping out dust and spiders. Fast, secure attachment: Elastic band with a fixed buckle adapts to irregular edges and ensures the cover stays in place during fan operation. Materials built for humid grow environments: Waterproof Oxford cloth resists moisture; odorless mesh prevents off-gassing; reinforced elastic for repeated use. Compatibility and use Designed for circular vent or duct openings matching the listed diameters. The elastic/buckle adjustment helps fit slightly irregular or tapered openings. Two-piece pack makes it practical to remove one cover for washing while the other remains in use. Practical applications Grow tents and grow rooms: Cover intake/exhaust ducts to reduce dust and pest entry while maintaining proper ventilation. Hydroponic cabinets and indoor plant closets: Protect equipment and plants from airborne debris in high-humidity setups. Ventilation outlets for small inline fans or carbon filter ducts: Keep ductwork cleaner and minimize maintenance without restricting airflow. Care and maintenance Remove and hand wash or gently brush the mesh as needed. Replace with the second cover from the pack while cleaning to avoid interruption. Inspect elastic band and buckle occasionally; nylon rope elastic provides extended durability under normal use. Specifications (no additions or omissions) Quantity: 2 covers per pack Available diameters: 10.2 cm, 15.2 cm, 20.3 cm Outer material: waterproof Oxford cloth Center mesh: odorless mesh Fastening: elastic band with fixed buckle, nylon rope elastic Choose the diameter that matches your vent size to maintain airflow, reduce cleaning time, and protect your grow environment.