ITEM NAME:53x25x80mm Aluminum Enclosure PCB Shell Rail Controller Housing Description: Rail Controller Aluminum Shell / Infrared Sensor Shell /Data Board Shell /PCB Board Housing. Mainly used in communications, photoelectric, security, electronics, instrumentation and other industries. Good shielding, corrosion resistance, good appearance and easy, built-in grooves for holding circuit board. Surface treatment: sand blasting oxidation treatment, brushed processing. Light Weight, durable, non-corrosive,mold have long service life. Perfect for electronic projects, power supply units. Specification: Material: Aluminum Size: Approx. 53x25x80mm/2.08x0.98x3.14inch Package Includes: 2 Pieces Aluminum case 4 Pieces Fixed plate Some Screws Note: Please allow 1-3mm error due to hand test. The color may have different as the different display. THANK YOU FOR SHOPPING WITH US! Have a nice day!.Good shielding, corrosion resistance, good appearance and easy, built-in grooves for holding circuit board. 2 Pieces Aluminum case. Material: Aluminum. 4 Pieces Fixed plate. Light Weight, durable, non-corrosive,mold have long service life.