Strong practicality: aluminum top and bottom are sturdy and durable and light in weight, zinc anodized stainless steel shell/net cotton. Eliminate odor: 53% of the open-air perforated stainless steel mesh with maximum air flow can remove 99.5% of odor in the air. Sturdy packaging: There are special protective layers on the top and bottom of the activated carbon filter, double-layer protection, which can protect the product to the greatest extent and avoid transportation damage. Scope of use: Activated carbon filters are used everywhere, including planting sheds, hydroponics, greenhouse air purification, control odors and dust to protect the environment. After-sales service: If you have any questions about our products, please feel free to contact us, we will solve your problem within 24 hours.