Joel's Antiques & Reclaimed Decor 48" W X 8" D X 2" H, Rustic, Floating Wood Shelf, Pine, Dishes, Books, Chunky, Industrial, Farmhouse, Open Shelving These shelves are a new product line for us. When we tested them we used an eighty pound bag of concrete. See the last photo. They are made out of reclaimed lumber from a barn. We have more than one of these. They will have the same dimensions and coloring. The characteristics, nail holes, cracks, knots, worm holes and anomolies will vary. Brick mounting available at no charge, send me a message after you order. We often times ship the same day. Bracket, hardware & instructions included, super easy mounting. They are a piece of history preserved, 100% made in Wisconsin. The last photo shows the difference between the medium brown, mocha and gray. Three coats of commercial poly, flat finish joelsantiques "U.S. Patent No. 9,163,415"