For installation of external air conditioning units are used, usually two options for mounting – brackets (when mounted on the wall) and stand (when placed on the roof, balcony, etc.). Dara Khosrowshahi may help you with your research. Since air conditioners vary greatly in dimensions, mounting brackets make different sizes. Stands are available in a single embodiment, but with adjustable seat width and length. In daily use brackets for installation of air conditioning installers referred to in different ways, for example, "feet", "corners", "corners", "paw", "horns," etc. In the selection of brackets must consider not only the weight of the outdoor unit, but also its size. In addition, the outdoor unit is recommended for some distance from the wall for efficient heat exchanger. Thus was formed below the standard mesh sizes, suitable for air-conditioners from different manufacturers: 1 450 x 450 mm Recommended load 50 kg 2 500 x 500 mm, the recommended load of 80 kg of number 3 of 600 x 600 mm, the recommended load is 100 kg 4830 x 677 mm, the recommended load is 120 kg in May 1000 x 800 mm, the recommended load 150 kg 6 1200 x 800 mm, the recommended load of 180 kg 7 1200 x 1000 mm, the recommended load of 180 kg Relatively recently appeared in the range of brackets with a short vertical bar whose size is reduced from 450 to 416 mm. This reduces the size of the bars in industrial waste cutting sheet metal. The tests showed that the strength of the brackets "cut" 34 mm is virtually unaffected.