A darker room designed for necrophillia, it is called purple chamber for the ultraviolet lights in the room, with a drug vendor by the entrance for a more pleasant experience
"Your grandmother died? I'm so sorry, at least you'll get to see her in the purple chamber before the funeral."
"I miss my daughter, it's been 4 months already, I should take her corps to the purple chamber tonight"
A door wall is a sliding-glass door or patio door. The term is yet another example of banal Michigan vernacular, where in the residents latch on to company names, trademark names, marketing terms and product names from local companies. The terms become embedded in the local vocabulary and eventually become accepted as actual valid words and phrases. In this case the term comes from Wallside Windows in Taylor, MI (a large window manufacturer), where 'door wall' is their created word for sliding-glass door.
"Bob! John's gonna bring over them doorwalls from Wallsides on Tuesdee afternoon 'round two-thirty. Get 'er done!"