How to choose size: It is recommended to match the depth of the bracket with the length of the fastener to ensure maximum load capacity. Extending the depth of the membrane will increase the torque on the support arm. As torque increases, load capacity decreases (lever principle). Complete models and solid support: Models include 450 mm foldable flat brackets to fit different sizes! Maximum load capacity is 330 lbs / 150 kg. To increase load capacity, you can increase the number of fasteners between the spans. Space-saving: The foldable flat fastener requires only a mounting surface, taking up very little space. You can use them to extend workbenches in garages, laundry rooms, kitchens, boats, reception areas, backyards, caravans, bedrooms, balconies, bathrooms, etc. Folding them when not in use saves the most space. Easy to install: DIY-friendly, easy to install. The package includes suitable installation accessories, high-quality stainless steel screws and expansion tubes. You just need to ensure that the two fasteners are parallel to each other and perpendicular to the wall. Durable and long-lasting: Made from high-quality stainless steel, it has excellent resistance to corrosion and rust. No coating or painting, easy to clean, maintenance-free, can avoid daily wear and tear while maintaining a new shine. Note: This product does not include wooden panels. Measure the size before purchasing.