Lock Series

UM Series
All Great Openings products are equipped as standard with UM Series master keyed, core removable locking systems. The UM Series locks are flat faced and matte black in color, and the cores and keys are interchangeable with Herman Miller products using the same lock series.

SL Series
If desired, GO products may also be special ordered to include SL locks, which are scalloped faced and matte black in color. SL locks are interchangeable with the Haworth SL lock series.

K Series
If desired, GO products may also be special ordered to include K series locks, which will operate the Knoll K Series. GO's K Series locks look identical to the UM Series: they are flat faced and matte black in color.

Key alike service is available for all Great Openings' lock series. Please see our Dealer Price Book for additional information and product restrictions regarding lock, core, and key options.