Worldwide, the L-5 was the first guitar to feature f-holes. Then as well as today, the construction of the L-5 is similar in construction, carving, bracing and tap-tuning, to building a cello. This guitar as well as the cello are similarly designed in order to amplify and project the acoustic vibration of strings throughout carved and tuned woods, using f-holes as the projection points. From 1922 to 1934 the L-5 was produced with a 16" lower bout width. In 1934 the lower bout was increased to 17" - and this width is still used today. Also released in 1934 was the one-inch larger 18" archtop guitar named the "L5 Super" which a couple of years later was renamed the Gibson Super 400. These two master-built acoustic guitars are Gibson's top-of-the-line carved wood and highly ornate archtop instruments. These guitars cannot be constructed quickly and require unusual attention to detail, resulting in a higher price. The time, skilled workmanship and materials used in these builds has been delivered non-stop for the past 90+ years. Since the 1930s there have been several other 17" archtops designed by Gibson, including variations introduced as more affordable, less ornately decorated models - these were introduced to consider the budgets of musicians.