The SM400i is a 4inch, coaxial, ported speaker with a low-profile surface mount enclosure design for indoor/outdoor applications that delivers a consistent dispersion pattern (2 to 10kHz, independently verified.) Mounting hardware isincluded and features a corrosion and theft resistant Stealth™ U-bracket for easy and secure installation. Nearly invisible from sightlines, the Stealth™ U-bracket includes one way fasteners for tool-free, theft-resistant security. SoundTube’s custom engineered driver and electro acoustic network deliver high performance sound in a cost-effective surface mount speaker design. The SM400i speaker incorporates a five-position tap switch with transformer bypass position for simplified ordering and stocking. Corrosion and theft resistant U-bracket mount with safety cable, Euroblock connector, paint mask, terminal weather boot, and port plugs are icluded. Included port plugs can be used for added weather resisitance.