The Aries Switchback Headache Rack # AA1110109 is 19-1/4" tall and 63-3/4" wide at the base. It was not listed on the product page so you can tell your wife you weren't overlooking anything this time. view full answer...
Per Aries, the width is 69-1/2 inches at the widest point for the Aries AdvantEdge Headache Rack # AA1110101.
I have added an image below from the manufacturer showing this. view full answer...