These are lightweight, bright, and easy to install in place of existing troffer lights. I used three of these 2x2 LED panels to replace two 2x4 4-bulb T8 fixtures, and they are significantly brighter. Maybe too bright; two would have been plenty. My only minor gripe is the tiny philips screw holding the lid on the wiring box: kind of hard to reattach when the panel is already installed in the grid. I ended up wiring the light inverted in the ceiling grid and attaching the lid before flipping it over and securing it on the grid rails with the built-in hooks. Easy enough to do.
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