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Metallic Sleeve 250 mm. Odor Resistant is a connector for 250 mm ducts with a compartment for a neutralizing block such as Ona Block or Zerum Block. It reduces residual odor in indoor cultivation and provides discretion in indoor grow cabinets with high-flow extraction.

The 250 mm Metal Sleeve Odor Resistant works as the final air treatment stage in large-diameter extraction lines. The interior houses a deodorizing block (commonly compatible with Ona Block and Zerum Block) that acts by direct contact with the airflow, providing neutralization and a stable aromatic finish.
The 250 mm diameter is used in large rooms and main branches where the flow requires robust solutions.
Combined with a suitably sized carbon filter, this sleeve creates a double barrier against odor: the filter retains particles and organic compounds, and the connector scents the flow before it reaches the outside.
The metal construction offers mechanical strength, thermal stability, and long service life; direct mounting with standard clamps and minimal maintenance focused on light cleaning and block replacement.
No electricity or controllers required, making it suitable for installations seeking efficiency and simplicity. Very useful in flowering, drying rooms, and hot periods where terpene volatilization increases.
Classified as a cannabis cultivation accessory, it is ideal for projects seeking to reinforce aromatic discretion in sensitive residential or commercial environments, characteristic of a specialized Grow Shop in Spain catalog.
Designed for indoor cultivation with high-flow extraction, the 250 mm format fits large rooms, technical rooms, and large indoor grow tents. The neutralizing block installed inside attenuates residual odors and shapes the flow for a more discreet exit to the outside.
It is used to neutralize residual odors and scent the airflow just before the exit. The deodorizing block reduces volatile compounds that can escape even after the carbon filter, improving the environmental perception around the installation and reducing neighborhood nuisance.
This connector is part of the cannabis cultivation accessories aimed at air treatment. Compatible with Ona Block and Zerum Block, it integrates flexible and rigid 250 mm ducts without complex adaptations. The perfect complement for extractors and filters found in any Grow Shop in Spain catalog.
Recommended in flowering, drying rooms, and hot periods, when terpene emission increases. Very useful in warehouses and commercial premises with nearby neighbors, or in projects seeking to shape the aromatic output without adding electrical consumption or technical complexity.
Available at Hydroponics Blanes, a trusted Grow Shop with technical advice and discreet shipping. A reference as a Grow Shop in Spain, with a catalog of filters, extractors, and cannabis cultivation accessories to optimize ventilation and aromatic control in any indoor cultivation project.
The 250 mm Metal Sleeve Odor Resistant provides a practical solution to reinforce aromatic discretion in high-flow lines. The combination of metal body, housing for neutralizing block, and direct mounting in 250 mm makes this accessory a reliable ally to stabilize the outlet, improve environmental comfort, and enhance system performance in modern indoor grow tent installations. With the support of Hydroponics Blanes and the convenience of discreet shipping, it is easy to take air treatment to the next level.
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