B-right 18W 8-inch Dimmable Round LED Panel Light 1400lm Ultra-thin 5000K Cool White LED Recessed Ceiling Lights for Home Office Commercial Lighting What You Care: 8" cut hole size, ultra-thin approximately 1" thickness; Very little heat generated; No recessed can needed; Junction box not included, transformer size about 1 1/2 inches x 3 1/2 inches. One light come with one transformer. Energy Efficiency: 1400 lumens, 140 watt halogen replacement uses only 18 watt. Base on 5 hrs/day, estimate yearly energy cost $3.6, and it will lasts about 16.5 years. Dimmable LED Panel Light: AC110V dimmable panel lights, compatible with silicone-controlled rectifier type dimmer. No fliker and no dazzling, CE & ROSH & FCC Approved How to Install: Turn off the power-Cut a appropriate hole on sheetrock-Connect the driver to the 110V power supply-Pull up the sprinng clips and put the panel hook on the hole-Adjust the panel to stick the ceiling tightly. Extension Cable Provided: 5FT, 10FT, 20FT Extension Cable to extend the distance between light fixture and led driver, if you want, you can search "B-right extension cables" on Amazon, buy now for your convenient installation. <span class="a-text-bold">High Quality: </span>Die-cast aviation aluminum, great heat dissipation, lifetime over 50000 hours. <span class="a-text-bold">Comfortable Light Effects:</span> Adopting side emit light technology, through the advanced light diffuser and guiding plate to create uniform and soft light effect, that&#039;s so comfortable for eyes. <span class="a-text-bold">Constant Current Driver:</span> Our power supply using high-quality constant current isolation driver, with overload, overvoltage, overcurrent protection. Fireproof, safe and durable. <span class="a-text-bold">Convenient Install:</span> Spring clips assembled already, remove your troubles to install the clips; Add 2 Wiring Caps to easily wire them to the circuit. Material: Aluminum + Acrylic Input Voltage: AC110V/50-60Hz Output Voltage : 6W/DC12-24V; 9W-12W/DC24-43V; 15W-18W/DC43-63V; 25W/DC60-90V Luminous Efficiency70Lm/W LED Light Source: SMD2835 IP Rating: IP22 Light Beam Angle: 120 Certification: CE/ROHS/FCC Turn off the home power. Cut a appropriate hole on sheetrock according to product cut-hole size. Connect the led transformer to the power supply (AC voltage design, doesn&#039;t matter which leader connect to hot and neutral wire). Pull up the spring clips and insert the light fixture to the hole. Adjust it to hook the ceiling tightly. 1. According to the max load capacity of the switch to install appropriate quantity in one switch. 2. Recommended to increase the number of 10-20% to meet the product illumination, if the installation height over 8ft.