We canot find a part: the plastic cover the light...

Question

The hooks of the plastic cover are broken, and we have tried to find the replacement at Sears Canada. They gave us a Sears parts phone number but because we did not buy there they can't help. The store where we purchased it was a bbq and other items store that is closed.
Can you help us find this part? We don't know where to look.

Thanks,