| 摘要 |
<p>The chimney is formed of a spirally wound steel pipe (4) which passes through the roof (11). The chimney cowl consists of a rectangular box (2) cut at the angle of the roof. The chimney pipe is located centrally in the box by means of a clip (3) which has a loop (15) and two lugs (16) bent over the box. The box is closed by a lid (5) and a two piece wind cowl (6, 7). The two piece cowl has a frame resting on the box and top plate (26) resting on four legs (23). The base of the box fits into a frame (12) which rests on the roof.</p> |
