Replacement Horn Kit for STI-13000 Universal Stopper series or STI-6600 Mini Stopper series. May require frame replacement. New frame is included with STI-6602 kit.
Red, 1.5 inch deep backbox for use with Stopper Station button/switch activation type 0, 3, or 4 switch Back box is for surface mount applications Also available in green, yellow, white or blue