- Internal width (B1) is measured from the inside of the two longest sides of the container.
- Internal length (L1) is measured from the inside of the two shortest sides of the container.
- Internal height (H1) is measured from the inside floor level to the insider ceiling level of the container.
- Door opening width (B2) is calculated from the inside left and inside right of the frame supports allowing for a small gap for the opening radius of the door (usually 270 degrees). Expect this measurement to be slightly shorter than the available internal width (B1).
- Door opening height (H2) is taken from the floor level to the underside of the horizontal cross support of the container or simply the top of the door opening. This measurement is usually the same or less than the internal available height (H1)
