These frames offer the largest storage capacity of any bed type, typically holding between 300 to 500 litres of volume. The gas-strut mechanism lifts the mattress base smoothly upward to reveal a deep, full-footprint compartment underneath. This deep space is ideal for storing bulky luggage, large bedding, and off-season clothing that lacks a separate storeroom. Homeowners prioritising storage volume over daily-access convenience will find this solution maximises every centimetre of floor space.