| 摘要 |
<p>Door-and-window frame of the type having an insulated metallic frame (1-1')-insulating interspace (2, 2')-metal (3, 3')-wood (4, 4') where the wooden coating (U), is inwardly placed, characterised in that: along the internal perimeter (U) of the respective wooden coating (4, 4'), and between the metallic internal profile (3, 3'), a spacing acting as air recirculation channel is provided (I); some air passages (4.1, 4.1') are further provided, so that the air of the internal environment (U) may circulate (f), between said wooden coating (4, 4') and said internal metal profile (3, 3') that supports it in said channel (I).</p> |
