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Quick Details

  • Place of Origin: Guangdong, China (Mainland)
  • Brand Name: Octopus
  • Model Number: OCT-NRD
  • Type: HVAC Systems
  • Case Material: Galvanized steel
  • Blade Material: Aluminum
  • Usage: To prevent air from flowing through the fan
  • Advantage: Less sound level and leakage
  • Color: Silver
  • Function: Return Air
  • Size(mm): 100/125/150/200/250/315
  • Shape: Round
  • Feature: Energy-saving
  • Certificate: ISO

Packaging & Delivery

Packaging Details Carton/Pallet package; Seaway by Container; Packing in containers
Delivery Time Shanghai, Guangzhou, Ningbo

Fire Proof Non Return Damper



Product Description




Octopus Metal Co., Ltd  is the leading HVAC Ductwork manufacturer in China.


 We operates 6 efficient production sites for  air duct & duct fitting maufacture.







Model: OCT-NRD-100/125/150/200/250/315
Material:  Case is made from galvanized steel sheet and blades are made from aluminum. To have less sound level and leakage, gaskets are used in this product.
Features: Clack opens with pressure effect and when the pressure effect is gone it closes with the help of spring.
Company Information


·About us


Octopus Metal Co., Ltd is the leading HVAC Ductwork manufacturer in China. Our annual processing capacity reaches 120 000 tons (1.5 million M2).


We operates 4 efficient production sites for galvanized rectangular air duct manufacture. Our duct works are certified by China National Accreditation Service for Conformity Assessment (CNAS).



Factory Location 


ISO Certification:
Our Product 
Our Factory

HVAC Duct & Accessories Certificate


Globle Expo.
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China (Mainland) | Trading Company
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