On some other forum, a poster said: "
The company handling the replacement part Is called DDR. Their customer service rep, which took 3 different steps to get to, quoted me $21.53 for the drip pan (PN# 1-D-7800P6) plus $24.84 for freight to my home. I had to fax the credit card info which I was not comfortable with.
I decided this was too much for such a small thing and fabricated a rectangular box from a sheet of aluminum I purchased at the hardware store. Brazed the joints and then lined it with foil for easy clean up. None of the reps I spoke with knew of a manufactured foil liner that would fit.
If you would like I can get you the contact info for DDR or try and describe how I made the box in further detail."