Inspirational 23+ Oil Rubbed Bronze Shelf Brackets. The most common bronze shelf bracket material is metal. Check out our bronze shelf bracket selection for the very best in unique or custom, handmade pieces from our shelving shops. Gatehouse oil rubbed bronze zinc line bracket handrail brackets. Supports up to 600 lbs. Oil Rubbed Bronze Shelf Brackets - Steel Brackets Oil Rubbed Bronze Powder Coated Newest J Design Heavy Duty Brackets Shelf Brackets Open Shelving Screws Included The material directly behind the bracket could have an effect on the brackets performance.