Lew Electric 532-DA-A Round Deep Concrete Floor Box, Cast Aluminum, Fully Adjustable, Aluminum Flange FinishLew Electric 532 DA A 532 DA A Product Description The Lew Electric 532 DA A is a round die cast aluminum concrete floor box with an aluminum top flange. The box is fully adjustable and offers 1 2" of adjustability after it is installed via 3 screws with just a screwdriver. The 4" deep box is perfect for concrete pours between 4" and 6", and there are 32 cubic inches of interior space available. There are four 3 4" knockouts on the sides of the box to