The G.R.I. recessed "shortie" switch set is designed for applications where a 3/8" press tofit set is needed but space limitations will not allow for a full length set to be installed. Withthe 5/8" 20RS-12, or the .930" 20RS-T, the installer is able to protect openings thatotherwise would have to be secured with more visible surface mount configurations. Available in regular and extra wide gaps, the 20RS series provides an easy answer to thedifficult, high dollar window problems every installer encounters.