Specification :

easy to installation
Main material: the flame-resistant , static -free pvc net fabric, outside is elastic helix steel wire inside there is a lay of aluminum foam, with the strong points of reducing heat wasting reduction, low wind resistance, good nosie elimination, energy saving, environment protection ect.
Main specification: diameter( 100mm~ 1500mm, 4" ~ 60" ) ; length( 1m~ 30m, 30' ~ 100' )