Standard quarter turn lock and key set, allows a standard ceiling enclosure to be retrofitted from the quarter turn latch to a locking option.Standard quarter turn lock and key set, allows a standard ceiling enclosure to be retrofitted from the quarter turn latch to a locking option. Works with the ECB2S, ECB2SP, ECB2S-CR, ECB2SP-CR, ECB2S-RLNK, and ECB2SP-RLNK enclosures.