The GRI series of commercial and industrial switch sets offer the installer two choices: The 400 incorporates hidden terminals, inset into the recessed back to provide tamper resistant installations. The 410 has the standard terminals located on the side of the switch. Both options give the installer a regular gap of 1 1/2" while the wide gap version is 3", which cover the various types of steel door and frame conditions found at every commercial and industrial site. Spacers and mounting hardware are included with the set. The 410P version offers two feet of vinyl jacketed cable. A mounting bracket kit, PN #82-99-G is also available. The kit includes a S412P-G with M-402, S-200 & 4175 brackets and mounting hardware.|The GRI series of commercial and industrial switch sets offer the installer two choices: The 400 incorporates hidden terminals, inset into the recessed back to provide tamper resistant installations. The 410 has the standard terminals located on the side of the switch. Both options give the installer a regular gap of 1 1/2" while the wide gap version is 3", which cover the various types of steel door and frame conditions found at every commercial and industrial site. Spacers and mounting hardware are included with the set. The 410P version offers two feet of vinyl jacketed cable. A mounting bracket kit, PN #82-99-G is also available. The kit includes a S412P-G with M-402, S-200 & 4175 brackets and mounting hardware.