wˌɛn fˈæsənɚz ɑːɹ dˈiːp ɔːɹ bˈɛɹid ˌʌndɚ θˈɪkɚ wˈɔːlɪŋ mətˈɪɹiəl æz ɪn mˈoʊst plˈæstɚ wˈɔːlz ðɪ ɪfˈɛktɪvnəs ʌv stˈeɪʃənˌɛɹi mˈæɡnɪts ɪz kənsˈɪdɚɹəbli lˈoʊɚ.
When fasteners are deep or buried under thicker walling material (as in most plaster walls) the effectiveness of stationary magnets is considerably lower.