Though I measured my frame prior to ordering the Adarro Slat Headboard it did not quite fit, simple fix by adding flat extend plates.  Very pleased with the quality of the frame - sturdy.  I have been on line searching for about 8 months and this headboard style is exactly what I wanted - simple, clean lines.  Very pleased when I removed it from the box.  I ordered headboards from other sources but the styles did not quite fit once I received therefore returned.