DiversiTech® DDS-60U Non-Fusible Disconnect Switch. The line, load, and ground terminals are aligned for ease of wiring. This product has a reversible door. The side open door opens more than 180 degrees for maximum access and has a full dead front. The UL Listed number is IRF9, NEMA Type 3R and the US Patent is 6,630,637. This product was made by DiversiTech for the DiversiTech branded items.