Deluxe 4U Steel
This is a steel-covered version of the Deluxe 4U Aluminum. Everything is the same except the top cover, bottom cover and rear cover are all made of steel, painted black in an anti-scratch finish.
Steel and aluminium have different electrical and physical properties. If you aren't sure if aluminum or steel is right for you, you might start here - Aluminum Vs Steel Chassis.
This is a new product and currently in production. It will start shipping around July 15th 2016.
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