Measuring 18 x 11 Inches, this bracket perfectly works with a traditional 18 to 22-inch deep shelving board,DURABLE- Constructed of heavy-duty, powder-coated Q235 steel, tensile strength is min. 60,000 psi,LARGE CAPACITY- 1200 lbs. max weight capacity per pair when mounted into 16-inch wall stud centers,OFF-CENTER DRILLING- Allows you to easily and quickly carry out the vertical installation without adjusting the drilling posture,READY TO ACTION- Level, screws, and anchors include, just take out a screwdriver and start to do your project