Abstract: An improved channel beam clamp and locking skirt assembly for a suspended ceiling grid system. The channel beam clamp has a recess for receiving a channel of the ceiling grid system. The channel beam clamp is suspended from the channel in an essentially vertical plane. The channel beam clamp has a plurality of prongs extending from the lower end thereof. Each of these groups has an inwardly curved portion at its lower end which bulge outwardly from the vertical plane so that a pair of opposite prongs of the plurality of prongs define a receiving space therebetween for receiving a bulb of a ceiling grid member of the ceiling grid system. The assembly includes an inverted essentially U-shaped locking skirt which has a pair of legs depending from a slotted horizontal base. The lower end of the channel beam clamp with its plurality of prongs is slid through the slot and the channel beam clamp is slid upwardly. The plurality of prongs can again spread apart after they have passed through the slot.