| 摘要 |
An adjustable frame, e.g. a cavity closure, comprises a first elongate frame component 12, a component 26 mounted to component 12, and a second elongate frame component 20 mounted to component 26, component 26 being slidable relative to at least one of 12 or 20 to allow adjustment of their relative positions. As shown, the members 12, 20 are at right angles, but they could be coaxial. Flanges 22 serve to mount a window: block 34 is of insulating material, and ties may fit into grooves 24 to retain the cavity closure in a wall opening. |
