View GLV International Ltd. on TEKEN44The AF-323 product page mentions the following standards and certifications: - **EN 13180**: This standard pertains to ventilation for buildings, specifically ductwork dimensions and mechanical requirements for flexible ducts. ([glv1995.com](https://glv1995.com/wp-content/uploads/products_certificates/AF012.Standards.Mark.311220.pdf?utm_source=openai)) - **ISO 9001**: This is a quality management system certification indicating that the company adheres to international standards for quality management. ([glv1995.com](https://glv1995.com/about-us/quality-and-certificates/?utm_source=openai)) - **UL 181**: This certification pertains to factory-made air ducts and air connectors, ensuring compliance with safety standards. ([glv1995.com](https://glv1995.com/wp-content/uploads/2022/09/UL181.pdf?utm_source=openai)) These references are found on the product page and the company's quality and certificates page.
Non-insulated flexible duct with a PVC outer coating, constructed from multiple layers including heavy-duty aluminum and polyester, supported by a bronze-coated wire helix. Designed for temperatures between -30°C and +125°C, with a maximum pressure of 3000 PA and maximum air velocity of 30 m/s.
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