http://www.phiko.kr/bbs/board.php?bo_table=z11_03&wr_id=771&sca=16%25ED%2598%25B8_%25ED%259A%25A1%25EC%2584%25B1-%25ED%2599%2594%25EB%25AF%25B8%25EA%25B1%25B4%25EC%25B6%2595
내부 엑셀 난방관 설치 및 미장