100% rustproof construction and includes the patented German made no drilling mounting system. The mounting system installs without any tools, no measuring and carries a Lifetime Replacement Warranty. Designed for use on tile, stone, glass, metal, wood, concrete, brick and plastics. The system is also removable if needed and is ideal for renters, remodels and to remove before you move! Dimensions 11"w x 11-1/2"t x 5-1/4"d - 9-1/8" between shelves. Holes are 5" on center. 100% Rustproof Solid brass construction, nie wieder bohren no drill mounting hardware included, installs in minutes