... in gutter,rain filter or water filter and so on Our foam has passed the certificate Reach, ... ROHS etc.1.polyurethane foam material2.reticulated,mesh,10ppi-90ppi, size: 127 ... .widely used in paint the wall,filter water quickly,paint the wall averagely6.function:UV- ... protection,dust-proof,anti-bacterial,flame retardant,filter water well7. no harmless,no toxic,environment protection ...