Size and Dimensions
Widths and Lengths of Conventional Residential Bedding Products
Furniture and bedding products will fit mattresses according to the table provided below
*ISPA Dimension Standard
Conventional Bedding
Finished Mattress (+/- 1/2")
Innerspring Unit Construction for Mattress (+/- 1/4")
Molded Foam Core For Mattress
Urethane Core for Mattress (+/- 1/2", - 0)
Finished Foundation (+/- 1/2", - 0)
Wood Frame for Foundation (+/- 1/2", - 0)
Steel Unit Construction for Foundation (+/- 1/2", - 0)
Twin extra long
38 x 79-1/2
36-1/2 x 78
38-1/2 x 81
39 x 80
37-1/2 x 79
37-1/2 x 79
37 x 78-1/2
Queen
60 x 79-1/2
58-1/2 x 78
60-1/2 x 81
60 x 80
52-1/2 x 79
52-1/2 x 79
59 x 78-1/2
King
76 x 79-1/2
74-1/2 x 78
76-3/4 x 81
76 x 80
37-1/2 x 79 (2 required)
37-1/2 x 79 (2 required)
37 x 78-1/2 (2 required)
Split Cal King
72 x 83-1/2
70-1/2 x 82
72-3/4 x 85
72 x 84
35-1/2 x 83 (2 required)
35-1/2 x 83 (2 required)
35 x 83-1/2 (2 required)