| 摘要 |
<p>A trickle ventilator (12) for a conservatory roof to be sited between an eaves beam of the roof and a glazing panel extending over the eaves beam, the ventilator comprising an elongate body having a front (42) and rear (44) walls spaced apart, at least one aperture in each wall (53) and a gate (54) for selectively closing the or each aperture in the front wall to control airflow into or out of the conservatory.</p> |
