|ALUMINUM CANS - Aluminum beverage cans (such as soda cans) that have been emptied. These should not be mixed with tin/steel cans or any other material. Cans may be crushed or uncrushed.|
|ALUMINUM SIDING - Aluminum siding (from a house, for example) that is not contaminated with screws, wood, plastic, caulking, etc. Siding with such contaminants may be purchased for a slightly reduced price.|
|EXTRUDED ALUMINUM - A 6063 series aluminum that is commonly used for window and door frames. Clean extruded aluminum must be free of screws, nails, paint, caulking and weather stripping.|
|PAINTED EXTRUSION - Small amounts of paint or caulking allowed.|
CONTAMINATED (DIRTY) EXTRUSION - Small amounts of paint, caulking, screws, and nails allowed.
THERMAL EXTRUSION - Any amount of thermal bonding used to adhere pieces together.
|CLIP ALUMINUM (MLC) - Clip is used as a category for several different types of aluminum. Most unclassified aluminum will fall into this category. Clip aluminum must be free of all contamination - screws, paint, etc. Clip aluminum with small amounts of such contaminants may be purchased for a slightly reduced price.|