How do you get the cover off to change light bulbs?? Did not keep box and it is not obvious. I cannot get the end caps off. Please help.

Slide the cover to one side and the other should fall down. It should be centered to keep from falling out.

Before replacing the bulb, shut off power to the fixture at the circuit breaker or fuse panel. Allow sufficient time for fixture and bulb to cool. Remove the diffuser by pushing it into one of the end caps. While holding the diffuser steady with one hand, pivot the diffuser down and out of the fixture. Then remove the diffuser to expose the bulbs. Remove the defective bulb by using your thumbs to press and roll the bulb 90 degrees inside the socket.This will disengage the bulb contact pins from the socket contacts. Then slide the bulb pins out of the socket slot. Install the new bulb in the same manner you removed the old bulb. Re-install the diffuser. Restore power to the fixture.