The #27 mount set is designed to adapt specific Uniblitz shutter housings to an HMX lamp house, or an X-Cite® lamp house configured with the Nikon HMX mount. No modification to the microscope should be necessary. This mount set is a replacement for the #22 mount set. The housed versions of the VS, LS, and XRS series shutters, as well as the CS25 and CS35, can be configured with this mount set type. A clearance cutoff (1.38 in/ 35.1mm from the aperture center) is provided with the VS series only.