Billiard table manufacturers have produced convertible billiard tables (in the broad sense) that double as dining tables or as table tennis, foosball, or air hockey, tables, with removable hard tops. Home pool tables, which often lack a ball-return system, are commonly either 4 × 8 ft or 3.5 × 7 ft models, a medium between 3 × 6 ft. bar/pub tables and 4.5 × 9 ft tournament-size models. Low-end tables tend toward the smaller range, and may have MDF or wood beds as an alternative to slate; those with light-weight beds may be foldable for storage, as with table tennis. Miniature tables
Billiard room cities. Although billiards had long been enjoyed by both men and women, a trend towards male suites developed in 19th century Great Britain. These male suites paired billiard rooms with smoking rooms and sometimes libraries. One example of these male suites is Castle Carr near Halifax. By the turn of the century, billiard rooms were considered a standard feature in great British houses with "House Beautiful" claiming "Up-to-date owners of English estates have installed billiard rooms..." Many mid- and late-19th century billiard rooms were designed in an Oriental or Moorish style. Mark Twain's billiard room in Hartford, CT was decorated