Full-size means something that is not reduced or made smaller; it is of the usual or standard size.
The term is commonly used to describe objects, models, or furniture that are made to their regular standard dimensions rather than a miniature or scaled-down version.
The adjective full-size is often combined with certain nouns to specify that the item is of regular dimensions.
Oxford Learner’s Dictionaries:
"not made smaller; of the usual size."
This term helps clearly distinguish between scaled or miniature versions and the standard, original size of an object, which is essential when specifying measurements or expectations.