Night Therapy Platform Metal Bed Frame/Foundation Set(SmartBase + Metal Brackets for Headboard & Footboard + Bed Skirt – Queen) – No Box Spring needed Buy Full Size Sturdy Metal Bed Frame with Headboard & Footboard Brackets: Bed Frames – Amazon.com FREE DELIVERY possible on eligible purchases BEST ANSWER: Hi Elsie, The brackets do not make the bed longer. If you are using them to make a queen out of a double, the length is the same for a queen and double. A queen is only 6″ wider than a double (3″ on each side) so you don’t even notice that the headboard is not as wide as the mattress. The Modern Sleep Heavy Duty Adjustable metal bed frame is a sturdy secure way to set up your bed. Designed with adjustable brackets that snap right into place it also gives you the option to set up your frame to any bed size, from twin to king. .