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thank you for your reply. the can light you sent me from home depot looks from the picture like it is not flush with the end of the cannister or flush with the ceiling is this normal?
Also I am purchasing a battery back exit sign with lights as a couple of them are needed per code for this project. There is an option when I go to purchase the exit sign with lights that asks do I want self test diagnostics. Is this something that the exit sigh should have for my application or is just an option?