EnvisionLED 2X4-SM-3.5” 2x4 Surface Mount Kit 3.5” Height for all panels and troffersEnvisionLED 2X4 SM 3. 5 2X4 SM 3. 5 Product Description EnvisionLED 2X4 SM 3. 5 2x4 Surface Mount Kit 3. 5 Height for all panels and troffers Description: LED TYPE Panel 1CERTIFICATION NONEWATTAGE N AEMERGENCY N ASENSOR N ASize 2x4 About EnvisionLED: Established in 2010, Envision LED LIghting, Inc. is a Los Angeles based LED lighting leader that provides the market with an array of LED lighting products. Our series of high efficiency, low energy