The replacement lamp was purchased from Part Store.com. The price was $131.72 (shipping included). The lamp was purchased on 8/29/13.
The old lamp was working.
Thanks for your assistance. You did not address the question about the inside cover. How far inside does it go before being able to close. Should it pass the small metal conduit on the right side of the box?
Your answer concerning the lamp was great. However, I'm asking about the inside cover now. How far into the portal doers it go? Does it go past the small metal conduit on the right side of the replacement portal or should it touch the ring on the lamp cage?