What is another word for open frame?
Pronunciation: [ˈə͡ʊpən fɹˈe͡ɪm] (IPA) 
Open frame is a term commonly used in construction and engineering to describe a structure that lacks a solid outer covering. It's commonly referred to as a skeleton or an exposed structure. Some other synonyms for the term include bare frame, empty frame, skeletal frame, and unclad frame. These descriptive terms all point to the same concept of a structure that is missing some sort of permanent outer coating or shell. The presence of an open frame may indicate that the building is still under construction or that it has been constructed in a functional, yet minimalist style. Regardless of the terminology used, an open frame is a unique and interesting feature of any structure.
