Hillman 3 x 4 in. Shelf Bracket Zinc-Plated is designed for strength and reliability, making it an i choice for mounting shelves securely to walls. These brackets are crafted with a slightly over 90-degree angle to provide a stable surface that keeps items stationary. For installation, use #7 pan head screws, with 1/2" length screws to fasten the shelf and 1-1/4" screws to attach the bracket to a wood stud, which is sold separately. To ensure proper support, the shelf brackets must be fastened to a wood stud. When spaced 32 inches apart, these brackets a safe working load of up to 100 pounds. They are compatible with wood, plastic, or metal shelving, ing versatile use for various shelving needs. Model Number: