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Trundle Bed Glossary


  • bunk beds - stacking beds made of metal or wood. Some have trundle units underneath the lower bunk for a third sleeping space.
  • loft - an upper bunk with desk and storage space design sometimes includes an attached futon, a second bunk, or a drawer trundle.
  • daybed - a 3-sided bed with a twin mattress; it doubles as a sitting area and allows for underneath storage or placement of a trundle unit.
  • Fashion Bed Group Casey Daybed

  • trundle bed - commonly twin-size or daybed, but sometimes in full and queen sizes. Trundle beds allow for a second roll-out or pop-up bed to be stored beneath. Construction is usually metal or wood.
  • trundle unit - a pull-out bed on wheels or casters, stored under a trundle bed or daybed.
  • high riser/popup trundle - a spring lever mechanism that raises the trundle mattress to the same height as the daybed mattress, for 2 twin beds or 1 king-size sleeping area.
  • pull-out trundle bed - rolls out from underneath the slightly larger main bed, but remains at its original level.
  • drawer trundle bed - this is similar to a captain's bed. The drawer pulls out for a second bed at floor level. When the second bed is not in use, remove the mattress for under-the-bed storage.
  • lift-up trundles -less expensive than pop-ups; these require more effort for setup and take-down, but the end result is the same.
  • daybed mattress - a thinner twin-size mattress for daybeds and trundle units.
  • deck - support for daybed or trundle mattresses; most common decks are slatted, link-spring, and poly decks.
  • link-spring deck - a deck made up of several thin intertwined wire supports.
  • poly deck - a deck made of several small supporting springs beneath a polyethylene fabric top.
  • slatted deck -consists of 2 metal or wood rails and up to 24 wood or metal cross slats.