How To Choose The Size: It Is Recommended To Match The Depth Of The Partition With The Length Of The Support To Ensure The Capacity Maximum Load. Extending The Depth Of The Bulkhead Will Increase The Torque Of The Support Arm. As The Torque Increases, The Capacitance Load Decreases (Lever Principle). Models Include 200Mm Foldable Shelf Supports Maximum Is 330 Lbs / 150 Kg Load Capacity, You Can Increase The Number Of Brackets Between Spans. Space Saving: The Foldable Tablet Bracket Requires Only One Mounting Surface And Takes Up Very Little Space. Square. You Can Use Them To Extend The Workbench Of The Garage, Laundry Room, Kitchen, Garage, Boat, Reception, Backyard, Rv, Grill, Trailer, Bedroom, Balcony, Bathroom, Etc. Fold It Up When Not In Use Saves Most Space. Easy To Clean. Install: Even If You Are Not Good At Diy, It Is Easy To Install. Install. The Package Includes The Appropriate Mounting Accessories, High Quality Stainless Steel Screws; And Expansion Tubes. You Just Need To Make Sure That The Two Brackets Are Parallel To Each Other And Perpendicular To The Wall. Robust And Durable: Made Of Made Of High Quality Stainless Steel With Good Heat Resistance. Corrosion And Rust. No Coating, No Painting, Easy To Clean. Clean, Wire Drawing Process, Can Prevent Daily Scratches And Keep Shiny As New.