Goot Phenolic foam air ducts for central air-conditioning has six advantages compared with the traditional air duct products on the market. The advantages are as follows: 1. Low thermal conductivity ( 0.02w/ m.k) ensures excellent insulation property. 2. Light weight for transportation and handling ( 1.4kg/ m2) duct work eliminates having to use heavy duty anchors and supports. 3. Long service life. 4. Temperature capabilities ( -140 ° C to 150) 5. Easy to install which helps on cost savings. 6. Uniform in appearance of the installed duct work.