This defiantly does NOT fit a KING frame. It is very nice and would have loved it to fit , at least 5 inches each side where the attaching support bars to the bed frame . There are 2 set of pre-drills holes to use to attach to the bed frame, I would say this headboard would fit a double or queen only.
A beautiful headboard, easy to mount onto bed frame, but its made for King size bed even though packaging says double/queen headboard. Headboard extends 7 inches (14 inches total) both sides beyond queen size bed. It looks ridiculous, can't get night stands close to bed because headboard sticks out.
A cost effective luxury item, easy to mount and we will love it for years to come.