A door catch arrangement for cable enclosures incorporates magnetic catch components on the door and on an adjacent open-ended, flared, radius-limiting cable guide installed in at least one open-ended cable port of the enclosure. The cable guide itself covers the rim of the cable port and has two spaced legs, each leg having an end face disposed at the open end of the cable port. A recess in one of the end faces holds a magnet. In its closed position, the door blocks the end of the cable port and a ferromagnetic catch portion on the door opposes the magnet, which keeps the door closed. The positions of the magnet and the ferromagnetic catch portion can be reversed.