Metallic

 Hubbell Wiring RF500 Netselect® Rectangular Deep Standard Size Adjustable Floor Box; Steel  

 Hubbell Wiring RF509BR Tradeselect® Round Floor Box With Flange and Door Tile Trim; 4.800 Inch Depth, Solid Brass, Clear Lacquer  

 Hubbell Wiring BA2422 Shallow 2-Gang Rectangular Concrete Floor Box; 2.740 Inch Depth, Stamped Steel Box, Aluminum Collar, 35 Cubic-Inch, Aluminum  

 Hubbell Wiring B2421 Shallow Fully-Adjustable 1-Gang Rectangular Concrete Floor Box; 2.740 Inch Depth, Stamped Steel Box, Brass Collar, 39.5 Cubic-Inch, Brass