**Product Specifications:**
**Brand:** Submarine
**Model:** F200
**Main Material:** ABS+PC
**Seal Material:** Silicone
**Features:** The check valve relies on fan blades and back springs for sealed anti-reflux to prevent backflow. It is designed to achieve autonomous closing and opening, with lightweight fan blade material. Prior to installation, it is recommended for customers to check the public flue opening for negative pressure suction. If there is significant suction at the installation site, causing the product's sealing fan blades to be sucked open, it is not recommended for use. The check valve comes with a full set of installation accessories including:
01. No-nail glue
02. Aluminum foil tape
03. Expansion screws
04. Plastic straps
05. Steel wire
**Installation:** Three installation methods are available:
1. Steel pin card slot installation
2. No-nail glue installation
3. Magnet adsorption blade installation
**Application Range:** Suitable for wall openings with smoke pipe diameters of 18cm/19cm/20cm and flue diameters of 15cm-19cm.
**Additional Features:** 17° inclined design for quick smoke exhaust, upgraded ABS aviation material for visual smoke exhaust, and a butterfly biomimetic design for improved sealing.
**Safety:** Strong spring for rapid rebound after smoke exhaust, ensuring long-term use without deformation.
**Package Contents:** The product comes with a comprehensive installation guide and necessary accessories for easy setup.
For more information and detailed specifications, please visit the official Submarine store on JD.com.
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无需备货，先出单后付款，零成本搭建跨境电商供应链体系售后保障
专属客服一对一，高效率定制服务，退换无忧
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