Available in 4", 6", 8", and 10" configurations, Evolution poke-thru devices offer a range of capacity options to solve your open space challenges in the most demanding environments. Recessed connections and a cover that opens a full 180 degrees - with ingenious sliding doors - keep wires, connections, and people safe. The Evolution Poke-Thru Device is a whole new idea in poke-thru design, with ease-of-use and versatility built-in.