Salvage Dior spray painted cheap outdoor black rubber door mats with Heirloom White paint from Home Depot, then used a hand sander on them to give them an aged, distressed look. See image 1. Get the Look: • If you want to use a vintage version, how about the geometric cast iron wall registers with removeable louvers for $85 each at The Brass Knob in Washington DC. • Another oldie from The Brass Knob. Large cast iron coal furnace grille labeled "HOMER" in center of grille for $495. • I love this long and beautiful old heavy wrought iron scroll panel from Brass Knob for $465. • For a cheaper repro version, you could peruse Metal Wall ArtImages: As linked above.