How to choose the size: It is recommended to match the depth of the bulkhead with the length of the bracket to ensure maximum load capacity. Extending the depth of the diaphragm will increase the torque of the support arm. When the torque increases, the load capacity decreases (leverage principle). Complete models and solid support: models include 300 mm foldable flat supports to meet different sizes! The maximum load capacity is 330 lbs / 150 Kg. To increase the load capacity, you can increase the number of brackets between the spans. Space saving: the foldable flat bracket only needs one mounting surface, which takes up very not a lot of place. You can use them to extend workbenches in garages, laundry rooms, kitchens, garages, boats, receptions, backyards, RVs, grills, trailers, bedrooms, balconies, bathrooms, etc. Folding up when not in use can save most space. Easy to install: DIY, easy to install. The package includes appropriate installation accessories, high quality stainless steel screws and expansion tubes. You just need to make sure the two brackets are parallel to each other and perpendicular to the wall. Sturdy and durable: Made of high quality stainless steel, it has good resistance to corrosion and rust. No coating, no painting, easy to clean, drawing process, can avoid daily scratches, keep the gloss as new. Note: This product does not contain wood panels. Please measure the size before purchasing.