gutter filter foam mainly used in gutter,rain filter or water filter and so on 1.polyurethane foam material2.reticulated,mesh,10ppi-90ppi,3. ... for long term5.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 gutter filter foam,rain filter foam