EcoFill« WX fiberglass blowing insulation from Knauf Insulation is a leading sustainable insulation solution for open attic applications, floors, and sidewalls. EcoFill« WX is GREENGUARD Gold certified to meet the most stringent indoor air quality standards, contains no Red List chemicals, and is validated to be free of formaldehyde. Containing a high degree of recycled content, EcoFill« WX is naturally non-combustible. Installation is fast and easy with a pneumatic blowing machine, and unlike cellulose, studies have shown it doesn't settle and maintains its intended R-value for life when properly installed. Install Knauf EcoFill« WX fiberglass blowing insulation in your attic, floors, or sidewalls and get additional sound control, comfort, and energy savings year-round.