BestMassage Box Spring Metal Bed Frame Full Mattress Foundation Heavy Duty Strong Steel. Giantex Black Metal Bed Frame, Iron Vintage Style Mattress Foundation, Curved Steel Headboard Footboard and Sturdy. Giantex Twin Over Twin Metal Bunk Bed Frame Ladder Kids Adult Children.
Standard Bunk Bed Size, 39", 75", 39" x 75", Small, for one adult or child; California King Bed Size, 72", 84", 36" x 84", Not as wide but longer.
You'd be forgiven for thinking there are only three adult mattress sizes – single, double and king. But adult mattresses actually come in 10 different sizes.
Sheets are less expensive than a queen or king size. Cons: Many people find a double bed too narrow for 2 adults and too short as well.
California king-size mattresses measure 72 inches wide by 84 inches long, can also provide an average-size adult with enough space to sleep comfortably.