Provides an additional 2" of depth for surface-mounted pull stations or push buttons. Has conduit knock-outs for mounting around exposed conduit.
For use with STI-6500 (Mini-Stopper®) series as well as FA45 (STI-13020FR), and FA46 (STI-1301FR) Universal Stopper® series.
If used with FA45 (STI-13020FR), and FA46 (STI-1301FR) Universal Stopper® series, you will also require a SUB31 package of 4 3" Screws and Plugs.
8"H x 5"W x 2"D