Heavy Duty 7-Leg Adjustable Metal Queen, Full, Full XL, Twin, Twin XL, Bed Frame With Center Support & Glides Only Heavy Duty 7-Leg Adjustable Metal Queen, Full, Full XL, Twin, Twin XL, Bed Frame With Center Support & Glides Only. Bed frame with glides are recommended for wood, tile, and other hard surface floors. Ultimate in strength and durability, quality and structure. Features solid steel metal Frame that will give excellent support to your mattress and headboard. The Screws that attach the Bed frame to headboard are not included. Easy Assembly in Less than 10 Minutes. No Additional Tools Required. Please note that the center support bar does not work as a twin size bed.