Finishing materials and products HomeProductsFinishing materials and products Inquiry Save to Favorites GO :::::Sort::::: Name Date Added Popular ↑ ↓ BIO Clean Duct Bio Clean Duct (Pre-Insulated Aluminum / Air Duct System) < PIR Board Cross Section > 1. Aluminum exterior of the duct Embossing creates sturdy exterior which will protect it from any outside impact. It will also have corrosion resistant feature from epoxy coating. Epoxy coating will enable to create various colors. 2. PIR(Polyisocyanurate) Board : durable, light and good insulation 3. Aluminum interior of the duct Antibacterial epoxy coated Aluminum will eliminate the germs and will prevent the air pollution within the duct. ... Read More Inquiry Now Finishing materials and products Made in Korea bio clean duct Made in Korea duct Made in Korea BIO Clean Duct Bio Clean Duct (Pre-Insulated Aluminum / Air Duct System) < PIR Board Cross Section > 1. Aluminum exterior of the duct Embossing creates sturdy exterior which will protect it from any outside impact. It will also have corrosion resistant feature from epoxy coating. Epoxy coating will enable to create various colors. 2. PIR(Polyisocyanurate) Board : durable, light and good insulation 3. Aluminum interior of the duct Antibacterial epoxy coated Aluminum will eliminate the germs and will prevent the air pollution within the duct. ... Read More Inquiry Now Finishing materials and products Made in Korea bio clean duct Made in Korea duct Made in Korea