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Ventilation fire resistant air conditioner semi rigid flexible air duct 

Place of Origin: Zhejiang, China (Mainland) 

Brand Name: Hstube
Model Number: aluminum foil duct
Type: Floor Heating Parts
Material: Aluminum Foil
Color: silver

Application: Transportation

Performance: Temperature

Temperature Range: -30? + 250?
Thickness of aluminum:0.05—0.15mm  
The price :include tax and carton
The transaction price:FOB
port of export:Ningbo
Fire Resistance :Fire Retardant
Capacity:5000meter/day
Feature:
1. This duct is constructed from high quality aluminum,high operating temperature and low-pressure loss
2. Operating pressure: 2000 Pa
3. it is convenient in transportation,and it has the advantage of damping noise reduction,sealing strong and long service life

Rectangular ductwork commonly is fabricated to suit by specialized metal shops. For ease of handling, it most often comes in 4' sections (or joints). Round duct is made using a continuous spiral forming machine which can make round duct in nearly any diameter when using the right forming die and to any length to suite, but the most common stock sizes range evenly from 4" to 24" with 6"-12" being most commonly used. Stock pipe is usually sold in 10' joints. There are also 5' joints of non-spiral type pipe available, which is commonly used in residential applications.