My reason for purchasing the twin-size headboard was not to attach it to a bed, but to attach it to a large storage ottoman which sits against a window wall in my bedroom.  The price was great and the headboard is well-made and couldn't be more perfect for the use for which I purchased it.  With the headboard attached, I can now stand two large pillows against it and not worry about them pulling on the curtains.  The ottoman now looks like an armless love seat.