Heritage Adjustable Bed Frame: * Steel bed frame * Queen size has a center support that fits side-to-side * King size has a center support that fits head-to-foot * Twin and Full sizes have no center support and 4 wheels * Strong 1-1/2-inch angle side rails * Oversize, offset and reversible brackets ensure a perfect fit with any headboard * 2-1/4"" rug rollers (2 with locks) for ease of mobility * Shur-Lock system adjusts easily and holds securely * No tools needed for assembly * Locking legs have a triple-thick steel layer * Legs are recessed for more toe room when making your bed * Backed by a lifetime, limited warranty * Model No. 20R fits Twin and Full sizes; weight capacity 650 lbs * Model No. KQ20R fits Queen, King and Cal King sizes; weight capacity 700 lbs