475-I Enhanced Energy-Saving Soundproof Duct

Summary： The existing problems of the metal duct system can be solved by installing fiberglass duct liners. After insulation, the duct system can control the noise generated by the ducts, reduce the heat exchange of the metal pipe walls, and minimize water condensation.

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475-I Enhanced Energy-Saving Soundproof Duct

　　The existing problems of the metal duct system can be solved by installing fiberglass duct liners. After insulation, the duct system can control the noise generated by the duct, reduce the heat exchange of the metal pipe wall, and minimize water condensation.

　　The metal duct system with liners quietly transmits air to the required space at the designed temperature and humidity.

　　Note: Comparison of centrifugal glass wool directly formed soundproof duct with traditional duct

Name	Model 475 centrifugal glass wool directly formed soundproof duct		Galvanized steel duct (insulated)
Project cost	Low	One-time forming, no need for secondary insulation, saving secondary insulation costs	High	Requires secondary insulation
Production cycle	Fast	Sheet machine grooving, fast duct forming	Slow	Complex process, and special fittings processing cycle is long
Fire resistance	Class A non-combustible		B-class non-combustible rubber and plastic insulation
Air leakage	Small	No flange socket connection, small air leakage does not occupy height space	Large	Large gaps between flanges, occupying height space
Service life	Long	Corrosion-resistant, rust-free, non-aging, lifespan over 20 years	Short	Easily corroded and perforated, short lifespan, generally 6-10 years
Durability	Strong	Unique connection method, saving height space	Weak	Rubber and plastic insulation is subject to rodent damage, glass wool external insulation may fall off, insulation nails are prone to poor adhesion, leading to insulation board detachment, and insulation layer sealant is prone to aging.
Moisture resistance	High	Effectively prevents water vapor transmission	Low	Condensation causes rusting of galvanized parts and leakage of condensate.
Usage effect	Good	Good thermal insulation effect, sound absorption and noise reduction of 20-30DB, no odor, energy saving of 20%-30%.	Poor	Poor thermal insulation effect, relatively high noise, rubber and plastic adhesive contains high formaldehyde and odor, posing great harm to health, and large air leakage, high energy consumption.
Weight	Light	Density 80-120kg/m³	Heavy	Density 780kg/m³
Comparison chart	Overall aesthetically pleasing and flat, overall Class A non-combustible, long service life		Corrosion of galvanized parts, insulation layer falling off, unappealing, short service life.