The Grappler drywall anchor is the ultimate solution for hanging products on insulating concrete form (ICF) walls. Ideal for attaching crown molding, baseboards, and other forms of trim, the 4x8-inch anchor is pushed into the foam wall before drywall is installed. When it is between the drywall and the foam, it becomes a locking washer with 175 pounds per screw of holding power. No predrilling is necessary. Wind-Lock. 800-872-5625.