A double-wide trailer is a manufactured home that's twice as wide as the standard single-wide manufactured home. It looks like two single-wide trailers sitting side by side. These homes are built on a chassis according to standards set forth by the U.S. Department of Housing and Urban Development.
A double-wide trailer is constructed in a factory and transported in two main pieces to the building site, where a crew assembles it. Once assembled, a double-wide trailer looks similar to a modular ranch home; however, a modular home is built on a foundation, while most double-wide trailers sit on jacks. Skirting is installed around the bottom edge of the double-wide to enclose the open area beneath it.
A standard trailer, more accurately referred to as a mobile home, is a structure designed to be a permanent residence. It is no more than 18 feet wide and is built on a wheeled chassis for ease of transportation. A double-wide mobile home can be 36 feet wide once the parts are joined after transportation. Like standard mobile homes, double-wide mobile homes are almost completely constructed, inside and out, prior to transportation. Modular homes are usually unfinished on the inside and require additional construction on site.