EASILY FIT desk grommet holes 3.15" or 80mm in diameter. CONVENIENT grommet allows access to two grounded, UL-certified AC power outlets right at the surface of your desk. Even has a small opening for other wires to pass thru. EQUIPPED with one 6 long UL listed power cord. COMPATIBLE with ApexDesk Elite Series 71" Elite 60", Flex 60" Series, AirDesk 47/59" Series and Vortex M Series 60" Height Adjustable Desks. SUPERIOR QUALITY built with industrial grade flame retardant ABS (Rating: UL94V0).