Cooler Master desert air conditioner. Our products are 100% guaranteed. The Cooler Master CK2836 and CK2837 desert air coolers feature water tanks with a capacity of 90 liters and 110 liters respectively. This durable unit comes in a practical green color and is designed for efficient cooling in hot and dry environments using evaporative cooling technology. 90 liters price: 990 110 liters price: 1100