M-D Building Products 0.02 in. T X 3 ft. W X 3 ft. L Mill Aluminum Lincaine Sheet Metal

Easy to cut, form and fabricate. Durable powder coat finish will not rust or corrode. Perforated, decorative design is great for door and window security, plumbing, heating and ventilation projects, radiator heater enclosures, craft and hobby projects, room dividers and cabinet ventilation.