we would like to explore the market of electrical in Saudi Arabia and Egypt, first would like to order 2 sample to see the quality. the specification we need: cooling only, 18000btu, this can be your ref: We are here in the Kingdom of Saudi Arabia, it must be taken into account that the outdoor unit will work in a high temperature, the weather may reach 50 degrees Celsius We will need another sample with a frequency of 50 Hz, due to the difference in the electrical frequency in Egypt and Saudi Arabia