| 摘要 |
Ventilating apparatus suitable for use with double glazed panels comprises an elongate cylindrical member having an outwardly circumferentially extending flange and adapted to receive removably a ventilating component therein and an annular member thereon. The cylindrical member extends through apertures in the panels and the flange and annular member are adhesively secured to adjacent panels thereby to seal the cylindrical member relative to the panels.
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