All Patterns can be perforated for acoustical purposes Cone Head Nails are available in all Finishes. STEEL panels come UNFINISHED, and need to be treated with an OIL-BASED paint. For best results use a semi-gloss or high-gloss paint to prevent rusting or tarnishing. To leave STEEL panels in natural state, use clear gloss enamel by Rustoleum. Sample of Acoustical Option