The Bogen SM1EZ and SM4T Easy Install® Speakers are surface-mount speakers, designed to typically install in less than a minute. Installation is a simple, three-step process that does not require tools. First, two specially-designed studs pierce the ceiling tile. Second, two custom-designed wing nuts secure the speaker to the ceiling. Third, standard wire nuts make the electrical connection directly to the color-coded studs. Both the SM1EZ and SM4T are lightweight, durable speakers with a low-profile contemporary design, making them versatile enough to be installed in just about any installation with standard ceiling tiles. Both models have an exterior volume control for easy balancing that is easily accessible, but doesn’t attract tampering.