Die-cast aluminum cover assemblies: The new Evolution Series poke-thru design includes all metal die-cast aluminum cover assemblies, with two unique spring-loaded slide egress doors. No clumsy flip lids to get broken or cause an added trip hazard. Unique cover design: The cover opens a full 180 degrees with two unique spring-loaded slide egress doors to keep wires, connections and people safe. Surface style cover assemblies: A surface style cover is for mounting on top of the finished floor surface. The surface cover is designed to be used for carpet, tile, wood, polished concrete, or terrazzo. Multiple finishes: Evolution Series Poke-Thru Devices are available in multiple finishes, (BK) black, (GY) gray, (NK) nickel, (BS) brass, (BZ) bronze, (AL) aluminum, (AA) brushed aluminum, (SB) satin brass, and (SN) satin nickel to seamlessly match your environment.