GATEFOLD
Meaning of GATEFOLD in English
/ ˈgeɪtfəʊld; NAmE -foʊld/ noun
a large page folded to fit a book or magazine that can be opened out for reading
Oxford Advanced Learner's English Dictionary.
Оксфордский английский словарь для изучающик язык на продвинутом уровне.
2005