http://www.phiko.kr/bbs/board.php?bo_table=z11_03&wr_id=181&sca=2%25ED%2598%25B8_%25EB%2582%25A8%25EC%259B%2590-%25ED%2595%259C%25EC%25A3%25BC%25ED%258C%25A8%25EC%258B%259C%25EB%25B8%258C
겨울에 접어 들며 - 단열