Grilles: The period style scroll design make these floor registers perfect for any home restoration. Made of cast aluminum, they are rustproof & maintenance-FREE. Treated with a baked-on black powder coating each grille has a luxurious black finish & Renovator’s Supply logo. Mounting hardware not included, measures overall: 13 7/8 in. x 15 7/8 in.Features Authentic Renovator's Supply Logo.