HOW TO CHOOSE SIZE: It is recommended to match the depth of the partition with the length of the bracket to ensure the maximum load capacity. Extending the depth of the partition will increase the torque of the support arm. As the torque increases, the load capacity decreases (lever principle). FULL RANGE OF MODELS AND POWERFUL SUPPORT: The models include 200/250/300/350/400/450/490/540/590 mm folding tablet brackets 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 folding tablet bracket only requires one mounting surface and takes up very little space. 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. Folding it when not in use can save most of the space. Easy to install: Even if you are not good at DIY, it is easy to install. The package