Multi-port gravity blenders are designed to mix ingredients of different weights, bulk densities and shapes. These are available in sizes from 15 cu. ft. to 5,000 cu.ft. working capacity. These units are adaptable to existing storage facilities and are suitable for outdoor installations. This eliminates the need for separate storage structures. The units are available in carbon steel, stainless steel or aluminum construction with all standard industrial coatings. These are also used on either a continuous blending or batch type blending arrangement.